VVT Disable in HP Tuners, Getting Rid Of Variable Valve Timing
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- Опубликовано: 4 окт 2024
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The Cam phasing in light throttle areas is used for EGR , reducing combustion temps that can over heat engine and exhaust components as well as reducing NOX emissions. It also makes the engine more efficient by reducing pumping losses.
Thanks man! this totally worked for my ls swap. It was popping and banging, lots of weird stuff before I disabled VVT and AFM
Great vid , would love to learn more from you
I real wish you give basics LS cam tuning after swap ?would be so helpful
thanks
Got a new engine put in my 08 Impala LTZ 3.9 V6. The shop disabled the VVT before delivery.
Hello! working on a 2011 5.3 silverado. New cam. VVT delete. Is there some reason you can't just disable vvt by going to Variable camshaft - General - and change variable camshaft value from 1 to none?
Aren't you opposite on what the VVT system is doing? You stated that the VVT is a system that allows you to advance the camshaft up to a certain amount of degrees...? Then you stated that it's primary purpose was is for emissions...? It's my understanding that the VVT is designed to broaden the Torque curve of the motor by retarding the cam for upper rpm power. The VVT cams have additional advance ground into them for low end power and the phaser retards the cam for upper rpm power so the end result is a wide flat torque curve... right?
It is parked at full advance, I mistakenly said the wrong thing there. And while it can be retarded to create additional cylinder pressure for more down low power, it's more for emissions, you can see that based on the tables and where it does the most changes is in the cruising areas on most platforms. It also crates a layer of complication when tuning that generally is easier is you simplify the adjustments.
Goat Rope Garage that’s not correct. Advanced cam timing down low is what “creates additional cylinder pressure” ie. Makes more power.
Correct, but that is not the primary purpose
Goat Rope Garage what do you mean “primary purpose”? The purpose is to provide the best of all worlds. 1. Low pumping loss at low load (by retarding). 2. Good torque at low engine speed and high load (by advance) 3. Good horsepower at high engine speed (by retarding).
Can vvt be turned of even if your running the stock cam? Thank you
VVT : more overlap -> engine breathe better at high speed but poor performance at low speed (better for higher rpm), less valve overlap: more torque at low speed but low high speed performance as the engine can't scavenge the exhaust gasses with high rpm. So why disable valve timing, when you can stress this value more having a more aggressive toque at low speed as an engine that breath at full rpm? Don't bother with math with a fixed valve timing makes thing easier with less headache, but not as best as using advance technology to get both of the benefits. VVT was probably invented for the emissions purpose, that doesn't mean that if you know how to play with those values, you can have high torque AND high speed breathing engine all together, a surely better choice that giving up one of the two, disabling the VVT
That's but how it works in a single cam car. On DOHC you can adjust things like overlap with VVT.
Awesome vid. All info you have given has been awesome. 👍😎👍😎👍😎
What about addressing SOIT if the valve events have changed? This is something I feel is important that I never hear anyone talk about.
Why would you bring advance back in late in the rpm. Like in you simplified example? Shouldn’t it just be 0 everywhere or maybe some advance on the low and 0 all the way out
I have an 2007 yukon denali 6.2 with vvt its not an afm motor I tow my car to the track with it do u think it would be beneficial to disable vvt on it for more towing power and a little more power up top?
Thank you for these videos! Subbed. I have a 2009 2500hd with the ly6. I have hp tuners and would love to see another video on tuning the factory VVT cam.
Ben w I’m in the same boat with you. Same truck ,same year and same engine. I hope if I do what he did in this video works.
@@alfredogarcia9105 I removed the block of high cam advancement down low in the rpm. I kept a simple cam advance that goes up slightly with RPM and load just like in the video. My truck picked up low end torque like crazy. Another thing that really helps drive ability on our trucks is to unlock the torque converter in 2nd and 3rd gear. I have my converter set to lock in 4th above 50 mph and unlock below 45 mph. HUGE improvement, no more lugging down low
Did you mess with the VCP spark table any? Same motor just trying to dial in spark timing and vvt at the same time.
@@jacobb118 Thank you for bringing this up, I just brought up the VCP table in hp tuners. Had no idea it was even there! It has blocks of large advance down low. What does VCP stand for, and how does it function. Thanks Jacob!
Ben w I’m going to zero out my VCP table and smooth the VVT phase table as the video suggested. Then handle any spark adjustments through the high octane table. I’m hoping that will allow me to dial in spark in a more straight forward fashion.
The Eagle Hemi makes best power when you keep VVT and tune it right with a terminator. Why isn’t anyone attempting this with LS
Because people don't understand it, especially the older generation. It's adding complexity that most reject. I have to really explain these concepts to a lot of my customers, and eventually 99% to get it. If it was up to me every engine would have some k8nd if variable cam timing. My Supra doubles its torque at the 3000-4000rpm range with vvt. There is some incorrect info in this video but overall it's decent.
Instead of buying hp tuner and tune the computer ... Can't you just take the vtt selenoid out and lock it or jam it where you want to be on the timing ? Great video
I have a 2010 silverado with a blown 6.2 in it. I can't afford to buy another 6.2 but I can get a 5.3 cheap. My question is can I put an older 5.3 that doesn't have the vvt in it and have it tuned out on my truck???
I understand why we make these VVT adjustments, but shouldn't we also disable DOD when doing this?
Love your videos, thank you for sharing your knowledge and experience, quick question, I have 12 Sierra 1500 with a 5.3, I did a DoD delete (sadly after a DoD lifter decided to spin on me) I didn't do the VVT delete when I did the DoD delete, is it possible (and safe) to disable VVT without doing a full deleting, or should I keep it somewhat active, eventually I will do a full delete and up my cam to a stage 3+ for that power and sound every V8 should have, but until then I'm trying to safley squeeze the most out of my 5.3, pretty much everything is stock aside from the lifters and cam,
Is it enough to replace LS3 cam, VLOM, LS3 lifters and ECM tune to delete AFM and save VVT ? L99 2011 camaro ss
Hey buddy I done a dod and vvt delete went to the non vvt timing cover and 3 bolt gear do I set the cam # to zero and 0 out the tables
Did the same to my truck. Did you ever figure it out? Going to tune it myself since theres no one around my location to help
Honesetly I would keep VVT unless you are building a race car. Stock VVT cam and boost works real good for me and I get decent mileage. If I was throwing a monster cam and going big boost sure I would simplifiy it by deleting the VVT variable.
I'm doing a Diablo tune, true duals and cold air intake on my 2007 Yukon Denali
Do I need to delete vvt?
I rebuilt my 6L80 and doing a full DOD delete... Upon tearing it down I noticed that I have VVT... I already ordered the 3 bolt cam sprocket and BTR stage 2 Cam kit... My question is basically this... I get that I will need a different timing cover but what happens with the plug that is centered on the cam cover?? If the computer doesn't read it will it start?? Btw I already have the HPTUNERS PRO version and I'm learning by watching your videos...
Go to the VVT tab and set cams to none, should be good
@@GoatRopeGarage thank you so much!! Hard to find someone to give this level of service and advice... THANK YOU!!
Sorry to question you.. but do you have dyno proof that the vvt is killing low end horsepower? I was always told vvt helped low end power.
Nope, but I've helped tune cars this week alone that the owners complained about it feeling like power was flat, had them assist the VVT to not retard the cam so much and it made a huge difference for both. No need to apologize for questioning here, but if you have VVT it's easy enough to dial the retard down and see if it makes a difference on your platform.
You're correct VVT was designed to give broader power band over a wider RPM range. There are some valid reasons to disable, simplicity of tuning is probably the top oned, adding power is not one of those reasons
Man Stuff Channel I have proof that disabling VVT kills top end but it still retains that low end torque. VVT disabled I made 265whp vs 323whp with it enabled. Low end torque stayed the same.
What platform? The cam doesn't do much at WOT on most.
Goat Rope Garage what do you mean it doesn’t do much? Your clip at 3:25 shows it retarding the cam by 9 degrees. I think Hondaboi (🤦♂️) is saying he zeroed the table completely. If so that’s gonna kill peak hp because the cam is going to be advanced 7 degrees (at park). It needs to be restarted to breathe up top.
2016 Yukon L83 with cam with a 4 degree limiter, ported heads and a 3000 stall. No power from a dig but I thought it was due to the 3.08 gears. Do I follow these steps for my setup as I have a limiter or do I follow a different approach? Turning off the VVT with a limiter bad, good or indifferent? Trying to get it to have better take off as it feels like I'm pulling a trailer out of the hole. Loving your videos!
When all of this is done will the VVE table become a VE table? I mean do we just concentrate on the one table and disregard the others.
Hello - great video and nicely explained! I’m after removing a VVT cam and installing an LS3 cam into my swap project but I can’t seem to get it to start.. When I look at my tune, especially within the “Variable Camshaft” tab, under the general section on the left, my number of camshafts is set to “NONE” - would this be a problem and prevent all communication from the CAM sensor as I’m getting no cam signals on the VCM scanner. Thanks for the help!
Barry K
just wanted to ask if you fix the starting problem on your vehicle cause a delete vvt and install a performance camshaft kit and now it wouldn’t start
jose vargas Hi - I traced it back to the cam sensor, I’m not getting any cam sensor counts when I’m cranking. So it’s either a bad sensor or as I still have the original VVT timing cover installed, the sensor might be too far away from the ls3 reluctor
What about VCP spark tables after you smooth out the VVT high baro table?
You will lose power without VVT. Being able to advance a cam on the fly is a huge advantage. Unless you install a super aggressive cam, which is only good for high RPMs, keep the VVT.
Should I delete vvt if I'm using diablo tuner with cold air intake and true duals? I have a 2007 Yukon Denali xl
Stock cam has more low torque, aggressive cams trade off low torque for high rpm power. What you want depends on the vehicle purpose. Trucks are best with the stock VVT cam.
My truck is kinda a dog down below 3,200 but then it feels like a power band after that. And on the freeway at 75 (1800 rpm) it doesnt pull hills great in 6th but 5th is good. I wanted to tune the vvt but didnt wanna do it wrong. Anyway to tune it to help down low 1,500-3,000rpm? Or just do a full cam swap?
2012 gmc 5.3 4x4
Thanks for all the content!
Probably not, this is more about simplifying or doing away with VVT, it wouldn't hurt to try some of these tips as VVT is an economy thing more than a power thing. You have any current mods on your truck? There are a couple of basic things you can do to a stock truck to make it peppier.
@@GoatRopeGarage I have the same symptoms as T Bundy with my 08 2500hd. What basic things could one do to add low end torque.
Try going in to the VVT tables and dialing back the numbers, there at usually high numbers in the areas you talk about causing the cam to retard in that zone and feel laggy.
T Bundy I have the same truck. I tuned vvt (and spark timing correspondingly) and the lack of power under 3k is completely eliminated and now has great throttle response. 100% stock minus the tune
@@Maverick09171 I have an l76 vortec max that feels really doggy in the cruising rpm ranges. When you say that you tuned the ignition timing correspondingly. What exactly do you mean? How do you correlate it? Did you simply change the ignition timing by the same degree change you made to the vvt table?
I currently have a gen 4 6.0 from a 2500 truck. I'm also doing a Swap to a squarebody and going carb. Would changing everything, VVT delete, new cam, new cam sensor be better off? Your videos helps but I'm going carb conversion. Thanks great video.
After disable VVT..is it just fine without changing valve cam with non vvt Valve cam?
I'm putting an LS3 in place of an L92 in my 08 Escalade. The LS3 has no VVT or AFM. This swap will eliminate the VVT solenoid and VVT front cover. I'm assuming I should just zero out the intake cam VVT numbers . Will the PCM set DTCs for the missing solenoid? Can I turn off those codes? Great Video BTW!!
Im in The Process of doing AFM & VVT Delete to my 2014 LC9 5.3
Question: Can I use The Factory length push Rods when using Delphi Ls7 style lifter?
Is turning off vvt what would happen if you just didn’t plug in vvt and used a holly terminator X
I think you got the high and low temps backwards. High temp negative would make it always enabled...maybe it cancels out because you put such an extreme temp but i still think its backwards...am i right?
For a VVT Delete, wouldn't changing "Camshafts" under general to "None" not do the whole delete instead of all that other stuff?
I'm not sure, because I've tried that and still had cams do crazy stuff. I'm not certain that it's one of those parameters on some ECMs that doesn't do anything.
I was reading another tune and it had Camshafts:None and it had a truck norris cam, although it was a Gen IV engine. I came here to ask the same thing.
My screen doesn't look like yours. Is yours pro? I didn't purchase pro. Should I upgrade?
Great vid bro...
I wanna disable vvt in my jag s type...and convert it to carb..
Do you think it could be done?
Kyle if you have already started tuning on the MAF and VVE table and I want to go in and do this to the VVT, would I have to start over on the MAF and VVE tables?
That's a good question, there is a chance it will throw things of so I would be prepared to retune, but you won't be far off I'm guessing.
@@GoatRopeGarage ok thanks
Can the vvt be disabled on a 2007 GM H3 3.7 inline 5 engine...the vvt does not help engine reliability...over engineered...is it designed only for emmisions...
Hi I've got a truck 2009 6.0 with VVT and considering disabling it. When you go into HP tuners and turn it all off how does it show up or not show up when you're doing an OBD2 plug-in emissions test ,or dash check engine light?
Will it need further A/F ratio attention?
2009 Suburban 2500 6.0 LY6 vin K
2013 4.8 converted to 5.3 with BTR Torque Cam disabled VVT got the gear and cover but i still get the p0010 cam error on the scanner what did i miss?
Ty
Bro. What’s best performance wise on stock ls3 Camaro. Zero out all or 6 the high phase table ?. I only have a cai and exhaust
I am doing a DOD and VVT delete in a 2012 GMC yukon XL 6.2. Ive already disabled the DOD, will i need to do these steps also since i am going with the old 3 bolt cam sprocket?
What did you go with buddy? I’m doing mines next
@@leezylaflare254 went with a BTR stage 1 but can't get the tuning done right so looking at a replacement factory cam to go back in now.
Ahh, okay thanks
Deleted the VVT on my L86 using the Katech VVT Delete cover and gear. Verified all valve events using a degree wheel so I know my camshaft is installed correctly. Truck fires and idles just fine but the scanner still shows 18* of Intake Cam Angle. Any idea why? Should I be concerned or will the Tuner deal with all this?
What If someone just put an after market cam in there and he has no idea if is there a phaser kit or an ls3 sprocket would it still be safe to disable the vvt cam using the same method you demonstrated here ?
Hey bud I want to Thankyou for all the time you put in teaching cause I am very computer dumb lol. I haven’t got to use my HP tuner yet but still watching the videos getting ready I have a CTS2 edge program locked in my ECM I have to have it flashed and stock re-downloaded. But plan on doing basically cookie-cutter motor camp swap DOD delete and so forth if I mechanically delete the VVT do I still need to go in and delete the VVT in the ECM ?
I would since it's an easy process and that way the ecm doesn't even try to use any of that. Thanks for the feedback and let me know if you have any issues!
Goat Rope Garage thanks for getting back but ok I will I might end up doing it anyway before. I read the other guys comment and having same trouble it feels like it wants to break out and run but I can fill it surging until it gets up around 3500 4000 but in your videos and research pretty sure it’s torque management and possibly vvt as well. I do have a few bolt on mods and the edge that’s locked in for now. Any suggestions on getting the edge CTS to programmer out? I have had trouble finding someone to do it. I’m in Texas working in Austin at the moment
Looks like "Intake Cam ECT Correction" tables were not matching up from the hptuners base repository for a 2010 Camaro against the E38 i have from a silverado ECU with DOD when i used compare function some of the table was different. I changed it to match the LS3 2010 Camaro file is this okay
Can i just delete the VVT through a tune in the computer or MUST i delete the hardware that is the VVT as well to be fully functional?
Lt1 6.2 di If the vvt disabled in the computer ,does the vvt magneto sensor still have a purpose, can it be unplugged from the harness
Hey man. I have a 2014 Silverado 6.2 L86. I am deleting afm/dod with a new cam(step above stock), ls7 lifters and cam phaser limiter kit to keep vvt. Will an HP Tuner be of use or so I need a custom tune? Can you disable afm with a different cam installed? Does the tuner accept the cam info to rewrite the ecm? Thanks for your help.
Thanks for all of the info! I love the channel so far, I have a question though. Im doing a cam swap on a 2017 L83 silverado and installed a limiter in the sprocket. The truck was already tuned so the guy is taking it back to the shop that originally tuned it to have the tune adjusted for the new cam. Will the truck be alright to start and run if the vvt settings have not been messed with since it has the limiter in the sprocket? I was debating on leaving the cam magnet in the front cover unplugged until he gets it tuned because i wasn't sure if it would cause problems or not. I know its not gonna run right but he wants to drive it to the tuner after the swap. Any info on that would be awesome!
Do you have the ability to tune it? You could easily kill the cam retard enough to keep it within the limit of the limiter. Probably won't hurt anything if you can't, it just will probably throw some codes because it can't time as far as it wants
@@GoatRopeGarage Thanks! I do have the ability to tune it but the customer does not want to pay for the licencing credits since his other tuner has it licenced already. I'm just doing the install but will see what it does once i start it up!
@@GoatRopeGarage would getting a vvt cam from texas speed require more tuning in comparison to just deleting the vvt and upgrading the cam??
Will this keep me from getting a p0011 code? 2010 GMC Sierra.
I’ve changed all the VVT delete parameters and now I’m getting P0010 codes. Do I adjust DTC error codes to no report?
Yep
I've got a v6 3.6 vvt 2019 dodge Challenger sxt
I keep getting code P0011 camshaft position sensor. I changed it i also changed the oil i also changed the harness to the camshaft position sensor,i changed the actuator i changed the VVT , i purchased a new transmission , know the shop said you need a oil pump in the engine I'm really sick of this code . My escalade engine runs RETARTED if i disable the VVT will this fix or solve my problem?
Can vvT be turned off even if your running the stock cam?
Yep
Hi, Great video. Does the same apply for a jeep Wrangler JK ? another Question , tuning a jeep is through SD tune only right ?
Correct, they don't have a MAF. A lot carries over but I can't say for sure if this does, I'll dig into it now
Hi. When you completely disable VVT you should also put Intake Min at 0° right ? Thanks Man you channel is great.
Correct
Is there a CEL that would also need to be disabled?
If my cam is ground with 4 degrees of advance do I need to adjust the tables accordingly?
You can take 4 out to run it straight up. But that doesn’t mean that it will be better.
Hey there I’m working though your videos and am so bummed it’s taken me this long to find your channel.
Something I’ve wondered before, when we are trying to disable any specific function there are often multiple variables than can enable or disable. Like at 7:30 of your video you go though and disable each variable.
Would it not work the same to just disable one? Set enable vs oil temp to 400 and then nothing else matters because it’ll never hit that right? I’ve often wondered this, would appreciate any input.
Correct, but we're there what's and it's just a couple button clicks to change the others and make sure that you're not going to deal with it. Thanks for watching!
If that is the case you can disable then under the DTC list but most aren't going to cause an issue during tuning other than a check engine light so when we are done and turn everything back on they go away.
do you still buy HP Tuners Credits ??
Tengo dudas sobre cómo inhabilitar los vvt de una ford f150. Se puede hacer solo con el escaner o también debo desarmar los piñones y trabarlos.?
Why would one get rid of VVT on an an LS engine? I understand deleting DOD/AFM completely, but taking VVT out leaves power on the table when tuning, unless one can not tune the vvt system. Deleting the DOD/AFM and keeping the VVT is the best way to GO.
With a high lift cam you will run your valves into your pistons. And VVT as it is from the factory doesn't make power, I've proven that in the real world and even did a video on it showing slower 1/4 mile times back to back on a VVT vs non-VVT tune with the factory cam. Also might be why it isn't on the LS7. It's a fuel efficiency gimmick on a push rod V8 and no one has proven otherwise yet.
@@GoatRopeGarage, yes, but a cam phaser like you said can help. I have deleted all of my DOD crap and kept the VVT in my GEN5 Camaro. I run a TSP VVT 3.2 cam in my car with a duration of 231, 243 and lift of 649, 629. I have been runing it for over 2 years with no issues. My car is faster than my buddies VVT/DOD delete and which has about same cam specs, just a little more duration and lower lift on the exhaust side. My car is vert and is also heavier than his normal top. I believe that the torque curve and power band that the VVT system provides is much better than his non VVT system. My buddy's car also has more power on paper. Saying to take VVT out is kind of misleading, just sayin.
Take it to the track, do back to back runs, one with VVT disabled and see what it does. You're comparing two cars, I tested it on the same vehicle, only thing different was the VVT was on versus off and it ran faster off
I have a 2005 envoy gmc came with a gen 4 5.3 i changed motor to a gen 3 it has a e40 ecm motor runs ok but cam crank need to be relearned it has a code and wont relearn
Timing issue or bad sensor
Do you do tuning for sale
Goat Roap, I did a cam swap on my 2015 SS Camaro, deleting the DoD and VVT and tuning went well with one exception. check engine light stays on for cam position sensor fault. What did I miss?
Interesting, any chance your sensor got damaged in the swap?
Also, did you use the stock can gear with a limiter?
@@GoatRopeGarage Went with a LS9 cam 3 bolt with gear. Completely deleted VVT...Found the solution: Eng Diag/DTCs/uncheck P0010, click; no error reported. upload
Do you know by any chance if i swap a non vvt cam into my 07-13 vvt silverado and change the cam sprockets will the truck turn on ?
So long as you still have a 4x sprocket
Would you suggest to disable vvt on a 2014 v6 lfx Camaro with the 4 cams or is it just different and leave it be?
I would leave it on a DOHC setup, is going to help those make power
@@GoatRopeGarage 10-4, thanks!
do you have to also enter 0º in the exhaust angle?
Just the active one on your setup, will be one or the other,
I was asked to disable VVT on a 2011 Colorado with a 5.3. It is alittle different than the video with the fact that it uses oil pressure and he took out the actuator. It set a P0010 code but would you disable the oil pressure tab after setting the oil psi enable/disable or would it matter? It has an E67 ecm.
Yeah, if he pulled the whole actuator just switch the cam selection to none and disable any DTC's associated with it.
Can you just completely disable VVT and keep the factory cam phaser. Or do you have to go to a LS3 cam sprocket when disabling this system?
I don't see why not, just zero out your intake tables and set your disable parameters.
@@GoatRopeGarage in the top left corner for "# of cam shafts to controlled by ecm" set to 0 to disable. Would that work? Or should I still zero the tables and set the limits beyond what they would ever see. Thanks
Any 4l60e transmission tuning basics?
We will get there eventually, getting videos out as fast as I can!
What would happen if I left the vvt cam in the engine and deleted the vvt in the tune same as you did in the tune? In an l83. Would it be safe to do so?
Yeah, just won't retard the cam
Good morning! Love your channel... I recently did a complete AFM/DOD delete and a non VVT cam. Runs like a champ out on the road but lunges and sometimes dies at stops. I disabled AFM but didn’t delete or disable VVT. Will disabling VVT solve my issue?? Educated guess will do I guess! I’m at a crossroad with my issue and can’t get across. Thank you for the great vids!!
If you installed a phase lock it won't matter, but you probably are having issue airflow issues, or too much idle torque if it's a fifth gen
@@GoatRopeGarage gen 4
I'm starting to understand tuning. I'm still lost through most of it.
Ever do any exotec vvt deletes?
Negative
Im doing can phaser lockouts on a 2004 5.4 3v f150 if I sent you pcm could you program for me at a cost$?
Throw that 5.4 3v in the trash. Its garbage and this is ls country. :)
It makes no sense removing the cam adjustment. This guy is talking rubbish. If you don't understand how to make the adjustment get a tuner.
When vvt is tuned properly and you actually know how to tune vvt it's beneficial for most people to utilize it unless you've done a DOD delete
AFM/DOD has nothing to do with VVT. I deleted afm and kept VVT and also am turbocharged. Using a 6.2l VVT cam in a 5.3l LC9 engine.
Does a 2004 Silverado have the VVT?
No