4WD Tech: Can a throttle controller cure turbo lag? | Auto Expert John Cadogan
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- Опубликовано: 3 дек 2022
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Going by a lot of the comments, I don't think most of your half wit viewers understood a word you said about how throttle controllers work. Think you may need to dumb down. A 100% throttle is the same with or without the controller, all a controller does is change the electrical curve between 0 to 100% input, instantly jamming your foot to the board is an all but identical outcome in both situations.
I’ve found that the best way to overcome any noticeable boost threshold when setting off at lights is to accelerate smoothly and not to treat every set of lights as the starting grid of the eastern creek drag strip. As my dad often said “it’s not a race”.
You just never need to pull out past a slower car in suburban traffic. Throttle response and turbo lag are very real. Throttle controller's don't improve that other than needing to not plant it to get fuelling etc quicker than going flat to the floor.b
That creaky Eastern Creek.
@@Low760 in suburban traffic what are you doing “having to pull out past a slower car”? Surely there is risks to that behaviour and ultimately it may be your patience that has too much boost going on?
I watched a dick hammer past me towing a camper in an 80 section, down to 60 and lots of traffic. He probably changed lanes 30 times in the space of 12kms and I was keeping up with him sitting in the one lane taking off gently? Plenty of brake distance between me and other cars and yet when we got to the start of the next 80 section he was behind me. It was hilarious and his poor car! No mechanical sympathy and so much wasted money on fuel and repairs that happen sooner than would be necessary if he just chilled out a bit.
Left foot on the brake, right foot on the throttle, stall it up on the converter to bring it onto boost and rip a nice set of 11's at every light - or you're not a real Aussie bogan.
@@simoncrooke1644 Doh!!! see what happens when you don't proof read.
I understand this subject completely. I once held back the boost threshold on a Ming Mole, and she accused me of suffering turbo lag.
'Moll not Mole'
Bring back the Ming Molls.
The throttle controller is the automotive version of Spinal Taps "but mine goes to 11"
Thank you John for giving me an avenue to explain to my mates what turbo lag actually is. As a senior citizen and coming from an era when lag was an actual thing I find that current beard strokers have no idea what lag was actually like in the early days of turbocharging.
Beard strokers are ... interesting. Unfortunately, they vote.
You gave me a good laugh with the reference to Spinal Tap, I reckon you called it perfectly.
@@antt5112 It's almost 40 years since I first saw that and I rewatch it every 5 or 6 years and that scene still brings me to tears
I know a guy who drives at 90 on the highway every day on his way to work. He does it to save fuel. He also carries a whole fitted out camper, roof basket with compulsory recovery tools, shovels, those plastic grip things, a steel bullbar, winch, water tanks, two fridges on the back seat full of water and drinks... he's loaded the buggery out of the poor ute. However, upon forum advice, beard-stroker encouragement, and dealer recommendations - he has had an oil catch can and snorkel fitted, and wider tyres (sadly, the new tyres have a lower load rating so that's not brilliant) on new wheels. This was going to magically reduce his fuel consumption by at least 15%, somehow... he also wants to upgrade the air cleaner system, as that's going to destroy his engine if he continues to drive on the highway - according to the dealer. Oh, he uses the camper one weekend a year, so it's just too inconvenient to take it off when he's not using it.
This! I see these dingo piss creek enthusiasts who actually only go offroad once a year driving through the city with their vehicles absolutely loaded down with all the gear. Must be doubling their fuel bill.
Dang Cletus😂
Did he forget to get a transmission cooler?
You should tell him that he needs to install a throttle controller if he really wants to save some fuel. He'll be able to achieve 90 without pressing down on the accelerator as hard.
When i bought my first Land Rover Defender it had 265x16 tyres on it. It was slow and the fuel economy was bad. I did a bit of reading online and read a comment about with the bigger tyres fitted it brought the engine revs down to under peak boost so you always used wider throttle opening to maintain speed. When the tread wore down a bit i swapped them for a set of 235x16s. The revs a cruising speed then sat on boost. I drove using less right foot to maintain cruising speed, economy went up and it was more responsive too.
Throttle controllers adjust the responsiveness of the throttle, which does have its advantages, because sliding backwards downhill for an extra 2 seconds while the computer figures out that "foot to the floor" equals "FUCKING MOVE IT" can be dangerous off-roading. You also have the benefit of making the throttle less sensitive for rock-crawling and taking off in soft sand.
John, you've also made points about how vehicle manufacturers have to cater for different application, so there will always be compromises if the way you use a vehicle falls outside of their setup, so writing off the entire after-market business is the wrong move to make. You are 100% correct though stating that you need to find out what needs to be improved first before splashing the cash.
Thanks John.
Informative and entertaining (no surprise there).
I do have a EVC throttle controller on a 2.2 liter diesel 2017 Ford Ranger (European specs).
I tried the available settings the first day, with this results:
- Making the pedal ramp steeper at the beginning (U settings): basically useless.
- Making the pedal ramp less steep at the beginning (E settings): useful while rock crawling. It gives me more control (more pedal movement to achieve the same torque increase). I identified E4 as the right setting for me. It turns out it's good on gravel and unpaved roads too.
- Auto position: mostly harmless (but funny) on paved roads, no-no on unpaved roads or rocks.
So I basically set it to AC on paved roads and E4 elsewhere. I have never driven on sand, so I have no idea what the useful setting would be, if any.
My general experience:
- Useful? Yes, off road (period). I think it's worth its cost.
- Could I live without? Yes, absolutely (I actually did, before buying it).
- Would I buy it again? Probably yes, for another 4x4 vehicle and only to reduce the pedal response.
You look tired and stressed. Stay healthy, your commentary of contemporary society is gold.
I didn’t have turbo lag in my 2018 Prado, I have reaction lag. You’d hit the throttle, wait for an hour then the car would move.
I installed a throttle controller and it improved reaction time considerably.
Yeah this is where the Kakadu shines because it has that switch to change between driving modes which just adjust the throttle response.
On the streets, use “sport” (or whatever it is, I don’t have a Kakadu) and that response lag is vastly reduced. Over at the other extreme is “rocks” which dulls the response to a mere politely whispered suggestion so when bouncing around over rocks your throttle is kept steady despite what your foot is doing.
I will be investing in an EVC throttle controller because many more credible sources who have actually tested them say they work very well. And they do in effect reduce turbo lag by getting the engine revs up to the boost threshold quicker. They are also useful for manual transmission 4WDs to soften the throttle response in "crawling" mode.
Mr Cadogan gives a good explanation of selected theories, but needs to test products before canning them. I'd suggest the hatred of "beard strokers" is clouding the judgement? 😉
When turbos reached their peak in the F1, turbo lag was loosely defined as the number of laps from when the first turbo car passed the finish to when the first non-turbo car passed the line. Loved that anecdote.
Built my first turbo car in in 1981, and it had a split pulse manifold and dual scroll turbine and there was no discernable 'lag'. My current car Lancer Ralliart has a single scroll turbine and there is noticeable lag - in comparison. The EVO uses a split scroll design to help overcome this.
Turbochargers by Hugh MacIness is a great reference.
Thanks John , that was very helpful and I'll be sending back the throttle controller tomorrow! I will continue to watch your show and how did you know that I had a beard? Andrew Swampy Marsh.
The beard - it's obvious.
For 5 and a half years I've been cussing out my Tucson turbo diesel for the exact scenario you described, convinced it was a fault. I have just apologized to my trusty steed for being ignorant of the facts. Thank you for your explanation. I'm less dumb now than I was previously.
Ive got a 2016 Patrol - i bought it during lockdown from a guy in Victoria sight unseen (but inspected) . He'd installed a throttle controller (and everything else for excursions up dp creek) .
Its a bit more nuanced than John has explained - it does make the vehicle more responsive (not more powerful, not less laggy) - but more interesting to me are the other options - i can turn down the throttle response - great for wet weather driving and when you dont want a jumpy 4x4 in tricky offroad conditions - and theres an auto option that feels more engaging with how im driving at any time
(it gets punchier if i put my foot down, yet more sedate with a lighter foot).
Turning it off always feels like the Troll is falling asleep.
Obviously people are just talking about reducing the throttle lag and confusing it with turbo lag, the throttle lag is just there to assist with smoother operation. I have a 2021 hilux and it would be great in certain operations to have less throttle lag but the car is perfectly fine from factory it will do everything you want it to. Just drive it.
He is my irrefutable evidence that a throttle controller is worth the money.
I fitted one to our family Ute.
The wife’s comment.
“What have you done to the car? It’s so much more ENJOYABLE to drive”.
wife approved mods best mods
My turbocharged Noble has a throttle controller. It's my right foot. The cable between the pedal and the butterfly enables amazing control over engine behavior.
I bought a car with one fitted, got sick of tuning it up and down. Ditched it and let the factory tune do it’s thing. Much happier
John I find throttle controllers improve the driving experience. My wife and others have a view that the immediacy of throttle response provided is too much for them.
3 turbo Subarus, 2 atmo Subarus and one turbo BMW and I will always use a throttle controller as the driving experience is improved for me.
On a track that has corners the improvement is noticeable with better punch out of corners and lower lap times. On a straight there is no change.
I use hikeit brand and have a great experience and recommend to anyone that wants to improve the driving experience.
Thank You, I have to explain this to customers at my auto shop often. Opening the throttle too far too soon actually reduces engine performance.
computers prioritise emissions.. like rev hang to burn off fuel.
I've found the ability to adjust throttle response with a throttle controller to be very advantageous. In slick conditions I can numb it down and enjoy a crisper throttle when desired. There are several videos that have actually shown the benefit in quicker times with a throttle controller. I myself don't care about the quicker times as I don't drag race my cars, but I do love the feeling of the throttle response being what I want it to feel like.
I looked into the throttle controllers and found exactly what you said JC, it's just changing the throttle pedal's setting, essentially lying to the car's ECU. I've read of people going and getting their car's tune/map updated and these controllers became a problem because they're designed to account for factory maps.
Have you read of Koenisegg's answer to turbo lag. They install a small compressed air jet just before the blades of the turbo unit. Mash the throttle and some stored air get them buggers up to speed ,pronto!
I usually only rely on anecdotal evidence. My 2.0 turbo ute had dreadful throttle delay, as in 3 to 4 seconds, and the accelerator pedal failed completely at 40k and was replaced under warranty. New pedal was a touch better but still bad. My wife hated driving it. At 60k I installed an IVC controller and fixed the issue. I run it in 'auto' mode around town and use hi in sand and dumb it down for the slow and steep rock climbs. I test it every now and then by switching it off and all the problems come back. I'm not sure whether my diesel 2.0l just loosened up a bit or or the IVC is responsible but my fuel consumption went from exactly 10 litres per100km down to an average of 8.75. It is much nicer to drive in all conditions and it appears to be saving me some fuel costs as well. My wife is very happy to drive it now as well! Best money I have ever spent on a vehicle! PS I use 4wd every day for work but I have no aspirations for Dingo Piss Creek. Cheers
Great video and explanation John…. Thanks.
Throttle controllers work better the other way around. They can make the excelleration ""spongier" for rock hopping. Or just do as I do and learn to drive
16:24 "waiting for a train" had me pausing your vid and playing Flash And The Pan--yet another Australian band in my collection! :-)
I made sure I bought the last of the V6 in 2016 for the misses and intentionally did not want a diesel. Most of my mates thought I was crazy.
I'm still laughing. When you factor in the cost of maintenance and the difference in fuel costs, the petrol is far cheaper to run. Not to mention 10× nicer to drive.
I have learnt a new thing today. I've recently bought an MG HS and when I press the gas it takes a second to respond and I used to think its turbo lag
Very informative again. I bet most people don't understand what's turbo lag. I didn't and I have had multiple people since decades ago, telling me effectively boost threshold (which they call turbo lag). some of them are even good at cars (eg. Capable rebuild car engine).
Great Video John. I have Been building and Modifying Car Turbochargers professionally for over 30 years. The common request from diesel 4x4 owners is for less Turbo Lag. They do mean "boost threshold" but this is not in their grasp of technical understanding terms to describe something in a turbo engine.
When I am asked to "Upgrade" or "high flow" a turbo for more power, the general customer does not like to here that increasing component internal part size to increase flow will result in a worse boost threshold ("lag" in their language). It needs to be explained to the customer that any modification to increase flow has a pay off in the performance of a turbo engine.
They also hear results from tuning upgrades, that increasing fuel at a lower RPM to lower boost starting point in the revs help performance but this also has a pay off in fuel economy and extra heat from the increased fuel.
I think the modifying Turbocharger industry would be the most misinformed, misunderstood, highly technical, and super competitive and riskiest engine porformance upgrades in the Aftermarket industry.
I think I might need one for my Subaru engine. The Royobi mower will really respond in the heavy grass.
Very informative 👏 thank you
John can you explain what a throttle controller really dose . I’ve got one in my older 2014 4x4 and I can feel the difference when is turn off to it turn on . Thanks John
My missus had a vw golf with the 1.4 tsi petrol supercharged and turbo tickover to redline power all way through
Problem with turbos is that most people think its 1985 when it comes to 'turbo lag' and having driven the lunacy back then compared to the modern day turbo's is night and day. Technology and efficiency has made most of the ones fitted up to cars, trucks and 4wds very well tuned for the average dude's vehicle and its engine size, they've got really good flow rates, matches to the exhaust output, your rev range and the engines peak torque.
Much science and big thinks go into them straight out of the factory to make them very good
Of course, you can go the tuning route on them but I think on a new car its honestly a waste of money and you may as well burn the warranty because it'll be worth sweet-fa.
Thanks for another great answer to a common question. My turbo diesel doesn't suffer from limp dick (aka turbo lag) because it's a.....class leading Kia 2.2, 4 cylinder, common rail, direct injection turbo diesel. It has similar max power and torque as the Toyota 70 series 4.5 litre V8 turbo diesel without the thirst. If I nail it from a standing start it will spin the front wheels until the traction control cuts power. It has seamless power and acceleration, so if Kia can tine it to perform without lag, so could other makers? I will confess to towing an aluminium clad, acoustically transparent, shitoure and a dual axle garden maintenance trailer around Australia for more that 1/4 of it's almost faultless 240,000 kms in 8 years, but haven't found Dingo Piss Creek. However I can complain about it's ability to tow 2 tonne at any speed limit at an average of 13.5 l/100km, best 11.5, worst 16, without needing to modify the engine in any way with a chip, tune, 3" exhaust ir throttle controller. I used to sell high performance superbikes and Iaughed (to myself) every time a prospective customer asked if we could 'hot it up' for him. Just drive the fucking thing and spend your surplus cash on enjoying life.
I call my BMW limp dick. It's a 320d ED, Erectile Disfunction. According to the internet it stands for Efficient Dynamics...
Tried one once on a modern Euro hatch with a small capacity turbo and a dual clutch auto transmission.
Yeah I guess it sort of made it a bit snappier to drive, but as noted it sure didn’t cure turbo lag!
What it did do was make it virtually impossible to drive in car park - the dual clutch auto boxes can be a little jerky at the best of times at parking speeds, but with a throttle controller it was horrible. Too much throttle off idle basically and the transmission ECU couldn’t deal with it - it was trying to let the clutch out expecting engine response to be less than what it was getting. No fun at all…
I took it out and just learnt to step on the throttle more. Sorted :)
Well, 2015 MN Triton with the 4D56 "HP" 2.5L, we have had a throttle controller for 3 years now.. all it does is compress the throttle bandwidth, (and helps kill engine mounts) the Triton is great and goes really well on boost, if you loose that boost or miss a shift, it's a dog and there is no throttle controller that can fix that. Re-mapping.. maybe? Different turbo.. possibly? Throttle controller, no.
Thanks for the vids and advice (and the shit you'll no doubt put on me 😅)
I've got a 2015 MN as well and was wondering if I should get a throttle controller. Thanks, you just saved me $300.
I own a 2023 Subaru Outback Touring. I installed an auto stop/start eliminator. No more start/stop at traffic lights or in traffic.
Possibly but I'd fit a pressure bottle plumbed into intake line and activated by something like a kickdown switch.. So it dumps pressure into the intake aft of the turbo to provide pressure until the turbo spools..
A Ford Escort rally car had a boost bottle as its entire rear bumper. It’s been done. Matching the turbine air flow to the engine airflow demand works better with the right impeller and housing combinations. This is a lot easier with 3D printed impellers. There are limits though. The Reynolds number is a harsh mistress
A trouser tipi inducing topic indeed. You got my attention, good sir... YESSSSS!
Thinking of getting a Pedal Box for my EV as the snorkel did bugger all for the turbo lag.
John’s right don’t waste ur money on a throttle controller I had a dpchip on a single turbo diesel no good ended up buying a Biturbo diesel great response 😎
question, whats the technique to assist take off from a standing start at a round about for example, when you realise someone is running it and you want to get the fark out of there ?
Tsunami of marketing.. Absolutely what a gem.
The words bullshit and aftermarket 4x4 accessories were just made for each other, like a jock in a sock. But it's made some guys rich, so not all bad.
What I'd like to know, what is the difference between "removing" boost threshold with a throttle controller and just blipping the throttle to spin up the turbo when you see the lights changing and pulling away as normal? If you want instant throttle response, don't get a turbo but you will miss out on all those efficiency gains when the engine isn't under load.
John, good explanation of this topic, people should just learn to drive with what they have, work with it and not against it.
Exactly for this, because I don't like the rubbery response of the engine to the request of the gas pedal...and when you change gear, you're chasing thrust again...I bought a petrol 2,5L non-turbo Mazda
I test drove 15 yr old 4wd’s of the same model. The one’s without a throttle controller felt like there was a blob of soft dough under the accelerator. The tuning may have made the difference 🤷♂️
Properly sorted R and D is what matters my VW Touareg V6 Turbo Diesel has no turbo lag, and economy is excellent .
If you view the the torque demand signal to actual torque as a linear system, you could in fact subtract the turbo lag by applying the inverse filter. In practice it doesn't work as the engine is a non linear system, meaning you can't just put more fuel in the diesel at a certain rpm and expect respective torque increase, the torque will saturate.
And likely the filtering of the accelerator pedal signal in the engine controller is also non linear, for emissions, for safety, longevity, comfort, etc.
very amusing....its the reason why i come back to this channel. I just love watching John take the piss out of idiots and their dumbass ideas. FYI, I'm here because obviously, I love a good laugh, all the more when it's at a loyal listener's expense.
Does a throttle controller just effectively shorten the throw of the range between off and full ?
I've got a HikeIt throttle controller on a Toyota. It's permanently set on sport 4. That's about the middle of the range setting between off and Race 9 setting. It makes the throttle respond like most drivers would remember when the throttle had a real cable connecting your foot to the carburettor /throttle body. Otherwise it has no effect on anything.
My first road bike was a 25o cc two stroke Suzuki,, RG , looking back it's a wonder I survived it ,but be it did teach me the importance of feeding , fossil fuel to an engine to get best out of them , downside the pistons got a bit oval shaped in the process, expensive but informative
I have a throttle controller on my X3. Pretty neat, basically a gain knob on the throttle map.
Yeah people are confusing "turbo lag" with e-throttle response times. I have a 4D56 challenger, and the throttle response is often terrible. In the time it takes to stab the throttle flat to the floor, and lift off again, the engine has barely come up from idle.
Also I've never been able to smoothly double clutch a downshift yet.
It's not turbo lag.
Hi I have a hykit throttle control in my prado 120 2003 with 1 kzte engine owned for 15 years put the throttle control in 2 years ago does not stop turbo lag but makes my car more reponsive in my case a much better response and like a different car to drive
I'm not sure if this is the same or not , but can someone tell me what gains someone would have by having antilag. Besides a bunch of annoying backfires?
Contemplating my turbo lag while driving home to Far Kurnel.
I have the evc on the triton but i actually only use it on eco 5 when towing.
I find the boost slower and much more comfortable on the freeway, If i want to go faster i press harder!
Merci, au revoir!
Well John I have decided that the modifications I intended to make to my not yet delivered Touson will go ahead. I think the four red valve caps will make it go much faster.
Thanks for the enlightenment.
Regards Tony
I just ordered one to dull the throttle down in my Mustang Ecoboost. For round town the throttle is way too sensitive, so I’ll see just how this goes
XM Sorento CRDI. 580,000km. The evc does change the way the vehicle drives.
As the engine has a variable geometry turbo ( electrically controlled ) I believe the evc changes the ramp speed of the throttle which affects both fuel injection and the turbo.
Damn you’re good. I learned a lot plus I’m now clean shaven!
Need a big snorkel and airbox to increase air density, air flow
Furthermore a large exhaust to let the turbo spin. Look up Gale Banks diesel. A true, engineer.
I bought one of these throttle controller after a series of messages from the seller, he assured me that it could improve the response of the fly-by-wire throttle body of my Kia Cerato, 2.0 NA engine, I was doubtful but it had a money back guarantee. I had it fitted to the car for 30 minutes, tried all it's modes and realised it was BS, contacted the seller and told him it was crap, sent it to him and got a refund.
Driving a Skoda vRS diesel the turbo spins up and starts working at about 2500 rpm. So to reduce throttle lag you simply have to change down and increase the revs before you want power for something like an overtake and then to the shock of passengers who normally drive petrol cars you have to change up before the red line which is only about 1500 rpm from when the turbo starts to do its stuff as once you hit the red line the computer says no and starts cutting the fuel so all the oily bits stay where they are supposed to live. Oh the wonders of a manual gearbox where you have full control :)
And yeah at a traffic light grand prix you might pull ahead in the first few metres but once the turbo spins up.....
it's called "cone lag" that's the time it takes from when the individual first "pulls" on the bong and when there is significant negative pressure to begin drawing in the smoke generated from the "gear" in the "cone" and/or "funnel" for some individuals,
and the smoke then to travel around the "glassware" to one's lungs and nourish one's brain with goodness.
I have ford transit custom 2l ecoblue 2020 van, I can say it have almost no lag , used to have ford ranger xlt 2018 ute, the lag was terrible ,I sold it for that reason.
One thing I have noticed over the years is that there are a lot of people on forums who are really happy with mods they happen to have. Its amazing how something comes along and suddenly you will see the thread bumped up daily wit a couple of new accounts or very low post count accounts who just have to tell you all about how great these things are.
Then if anyone dare suggest its snake oil they are all very quick to shout them down and reinforce how great the proiduct is.
Don't bother.
Hi John. Thank you for explaining things so well. If a plug n play throttle controller doesn’t improve the aka, turbo lag. Can you please explain why it does make an increased response to the engines jump up and go from idle. I must say, I’m confused lol. Cheers mate👍.
He mentions it in the video but because of fly by wire throttle systems, the ratio between where your foot is on the pedal and how far open the taps are on the motor isn't a 1:1 ratio anymore. It's filtered through an algorithm by the manufacturer that has to take into account every possible use case and errs on the side of caution to make a smoother ride generally. The throttle controller makes the ecu think you're requesting power much more aggressively than normal and this changes how the engine responds to that input. Generally slightly more aggressive than normal.
@@Kilometrico88 Hi George. Thank you for your explanation. Now I understand what’s happening and how it works. Regards.
Throttle controllers are just dodgy op amps. Would be most amusing to try and explain to your insurer as to why the throttle was stuck wide open when the crappy electronics in the bolt on TC fails lol. Variable vane inlets on modern turbos really help with any supposed lag anyway.
Its pretty simple ....dude. On the odd occasion when I need my Mu-X to jump off the line....spool up the turbo by pressing the ...right pedal, whilst holding the brake. Time this action seconds before the required break in traffic and ....viola,... your out of wherever you started from at the required rate of departure. Problem "Solvered" as we say here in SA. ....Thats Sth Australia, not Sth Africa
As usual with your videos l learnt something, off topic but how often do you do chin ups
Do one on Transmission flushes, right up there with the oil catch can con
Where exactly is Dingopiss Creek? I can't find it on the map.
Accelerator pedal on modern vehicles operates a potentiometer which the program in the engine control module ECM uses to control the electronic throttle and thus the engine. So the cheat devices must have resistors in series or parallel to the accelerator potentiometer to 'fool' the ECM about the accelerator position. I reckon that's a $10 modification with parts from Jaycar. AND you stuff the OEM's throttle resistor mapping. Wonder what happens at full thottle - outside the throttle mapping.
How do you “stuff the OEM’s throttle mapping”? With the the aftermarket throttle controller removed or disconnected the throttle system simply reverts exactly to OEM factory parameters. The controllers do not overwrite any factory parameters. As far as wide open throttle goes… zero difference. All the controller is doing is altering the curve of pedal input to throttle output. The end points, as in 0 throttle and 100% throttle don’t change.
You forgot to mention the extra 40 hp and way better fuel economy that a throttle controller gives .
Pull one apart and have a look inside , they are full of oil . Snake oil .
Beard Stocking Bear here I'd imagine that a throttle controller would assist in a low traction environment where you wanted to avoid wheel spin or wanted revs to spike immediately. This would affect the immediacy of Turbo Spool. Environmental Bias has been tested at length and the results are subjective so there's that. The Auto Expert Express has left the station Throttle Control on 4 (High), it left the tracks at midnight outside Piss Creek. . Waiting in hopeless anticipation on Train Station Platform.
Hey John, have you driven a Ranger 2.2 litre, 8 speed? Whether it's turbo lag or whatever, they're a pig "off the mark". Any ideas on a cure?
Thx for a daily great laugh...cheers mate
Thanks John I'll grab one for the Massy Ferguson 35.
Knock yourself out.
What he needs is a couple of Hiclones and Brocky's energy polerizer.
I've got a pajero sport and a throttle controller changed my world...
Variable geometry turbos basically eliminate turbo lag for the average punter.
So bloody well explained ----- buy and try before wasting good fuel $$$$ --- got to be something better BUY, TRY, ??????
Turbo lag was an interesting time for drivers of Ford Sierra race cars that jumped from some miserably low horse power to 600hp in a sec (??)
Best way to deal with turbo lag is always keep the revs as high as possible, never change up until redline. Also for best results a big sooty rolling coal tune will get more exhaust flowing earlier reducing spool up time.
Yes I’m joking, if your a normal person and drive a turbo diesel for any length of time it becomes natural to add throttle input slightly BEFORE needing acceleration. Most modern cars are already so good at low lag and a wide power band compared to like 90’s era cars as well.
fking love this channel
you're the reason there's a triton parked outside my house
I remember Mr Luxon from Safari who was amused by the term a "turbo lag". His point was that turbos make (more) power more quickly than naturally aspirated so what then do you call the lag in naturally aspirated engines? At 2k rpm most turbo engines will be making their max torque, whereas it might need 4k+ rpm in a naturally aspirated engine.
The delay isn't boost related..
There isn't any extra oxygen to burn more fuel so the ecu has to close the EGR valve and open the intake valve and 0.5- 1 second later fresh air enters the combustion chamber and extra diesel can be added then the turbo can start to spool up pushing more air into the combustion chamber.
this is why you feel a dead spot then some resonance then full power 3 seconds after putting your foot down.
and also why modern diesels with a manual transmission is so easy to stall at idle
Currently I Drive a Ranger (2015) manual - extracab- When I first got it, the Digital throttle response manipulation annoyed me - not endlessly as I am rational with these things, (it still does a little, but is it worth $200.) - doing a "Double shuffle" (yes not "needed" in a synchro box')- or merely a throttle blip downshifting from 6th to 5th - the engine response -is "very muted" (ie. nothing doing with less than a 2-3 second input - clutch depressed, or not, between 6th and 5th at near highway - exit - speeds....).. This is something a throttle controller module may indeed positively affect.
In the future, would you consider doing a dedicated video on CVT transmissions on function and long-term reliability. Could you specifically address computer manipulation to create pseudogear shifting. I owned a vehicle with a CVT and had to deal with jerking and constant incorrect shifting. Thanks…
Was it a Nissan?
Our CVT does that, especially selecting incorrect ratios. Turns out the rear brakes hold slightly (after we were told by Nissan that the rear pads wearing 3x faster than the fronts is normal). The car does some calculations via throttle input vs speed etc, to select the ratio, but it doesn't account for the brake being on, and effectively bogs down and labours the engine.
The car feels quite different when the brake is holding on (throttle response &, turn in especially). We've worked out how to release the brake hold by pushing the door brake hard down to it's stop 1 or more times. Once brakes are not holding, the CVT (and it's calculations) works great.
Me too. More so about whether the drive band is a weak point. Not knowing too much about them has me simplisitcaly comparing a belt drive to gears, thinking gears may be stronger?? Same question arose with old Honda Four (1970's) engines that had drive chains. Never worked that one out either.
They don’t reduce throttle lag they just give better response the same way they do on a NA engine I have one on my V8 it makes difference I just don’t use launch because it takes off too quick but I do like the economy mode and the throttle lock mode
when is any product manufacturer going to say this product is no good, they will always say their product will improve your vehicle, so never ask them "will this affect the manufactures warranty?", because they won't help you if they genuine won't
John. Strange saying on one hand OEM tune their throttle response "GR Yaris" "i20n" then 30 seconds later saying a aftermarket throttle controller does nothing to help turbo lag.
Well there you go, I learnt something, and now I'll become the beard stroking wanker correcting people who say turbo lag when they mean boost threshold.
You were probably always destined for beard-stroking wankerhood.