HEI Distributor DYNO TEST: Progression Ignition VS. DUI Davis Unified Ignition. WHO WINS??
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- Опубликовано: 30 июл 2024
- HEI distributor Dyno Test! Today on Unity Motorsports Garage I show how we tested the DUI Ignition HEI Distributor against the Progression Ignition HEI and the results is shocking..
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#chevy #dragrace #dyno #budgetbuild #nonamenationals 
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This all comes back to what DV and others have said: 2-5hp here and there over all the details add up quick. This is a perfect example of that.
Totally agree, progression ignition has a video that shows the spark on the plugs at higher rpm. Very impressed with results.
Decades ago racers said,
XX won't help...
Zz won't help
Yy won't help...
We did XYZ together and were consistent winners season champion.
Every 1/2 HP adds up.
Geez, one year I even lost 20 pounds. Seriously
Just added one to my fresh Pontiac 400 along with a carb cheater. Best combo for tuning a carbed engine for street use. I can see afr and timing along with vacuum in real time.
Progressive ignition needs to give you a promo code 😆
I have had my Progression ignition for a little over a year now. I shelved it for about 6 months because I was getting a bad mis/backfire under wide open underload pulls after doing a motor rebuild because of a ping that i couldn't get rid of. Had the timing retarded all the way to 29° of total. Your videos got me reinterested in looking at it again and followed the install to a T. Went in to make my table but decided to look at the last saved table i was using when the misfire and backfires were happening and realized I never brought my timing back to 36° where my motor is happy. Well in the end put the timing back to where it should be and she ran right up to 5,800 RPM and never missed a beat. She pulls harder and has better throttle response again. This is on a 406 SBC in a 69 camaro. The car is a blast to drive again. Thank you for giving me renewed interest. It was alot of money for a shelf ornament until today.
You guys are killing it! Great job! Love it!
Thanks Brother! Always trying to learn
Andy
You are right Andy. The results were shocking and you have sparked my interest. Thanks for this feature!
I was really shocked.. it's the small things that add up!
Thanks for watching
Andy
Great video and confirms my implicit bias ! :) Love my PI distributor- had it about 1 year now. Nice to see it makes more power too, even though I'm not a dragger. A lot of guys make the mistake of using the old resistor wire/circuit for their new electronic diz. -- No good. You need to run a new, maybe heavier gauge right from the fuse block to make sure you're getting a solid 12V all the time.
Absolutely a heavy gauge 12V wire is a must! They work really well
Andy
Just thought I'd point out that from the factory, GM used a much heavier gauge wire to power the HEI distributor, and I'm sure the factory had good reasoning for it.
I always use automotive grade 10 gauge on everything?
Overkill?
I think this shows that having the correct timing at a given rpm produces the most power. The progressive gives an easy way to get there. That being said I think coil on plug makes even more power because you can get the same thing regarding timing control but with a better spark.
Yeah, I believe there are some Coil dwell issues also.. but having the right amount of Spark and at the right time is priceless
Andy
thats true but coil on plug conversion on old school distributor equipped engines gets expensive. moreso than the progression distributor that has built in nitrous and boost retard AND a traction control and anti theft kill switch
in the end, how far do you wanna take it? especially if its just a street car? its all money...
Another great video brother. Looks like y'all did a fair comparison. Progression distributors are real deal. About as high tech as you want to go for old school power...
Holy shit. Seriously running boss9 heads? I love this as actual real time real world results. I'm running SR-71 but look forward to real world testing on Kasse headed engines. Thank you for the info for at least a glimpse of what to expect.
That's not a Boss 429. Its a 429 SMALL BLOCK with Boss-type heads, but not the Kaase Boss9. The Boss9s and SR-71s are for a 429/460 block.
Good info! I’ve been interested in this technology for a while. Everyone wants efi but I’ve been more interested in the timing control of the computer. This might be the answer.
This is impressive! An extra 16 lb/ft on the street is useful. So did the power increase come from MORE timing or LESS timing at the lower revs?
I was wondering how the progression ignition would do after you guys fixed the loose 12-volt wire. I'm thinking about upgrading to a progression ignition. Thanks for the video.
I was so shocked we backed up the tests twice!
Andy
great video. and to add another plug for the Progression ignition, not only max power considerations, but also if you need a lot of advance for a street car with a cam with lots of overlap, you can custom tune the Progression table for low rpm retarding, to take care of those dreaded hot restarts when an anolog distributor would fight the starter motor. Also, anti theft on the Progression.
yes...thats why i want one. but im afraid if i buy one for my 302 zephyr it wont clear a strut tower brace. but a DUI duraspark will clear that brace
but that would suck leaving power on the table
Plan to use DUI for my pre 65 Chevy II racecar. As they make HEI's tailored to your use parameters
PI pays for itself in labor savings vs a mechanical distributor. It's a no brainer. For my 4x4 on the trail I'd still actually use the PI but carry a mechanical for backup - it's a mechanic thing that.
One time I forded a river with water over the hood. A month later, going to work the truck wouldn't start. I took the cap off and the distributor was full of water. The drain holes were blocked (by me) the cap sealed and the cap vent siliconed up but somehow water still got in. Point is - basic points are unbelievably reliable. Electronic may well have been this reliable, better even - we'll never know, but I like points for offroad.
I think magneto is the most reliable.
It would only take a few minutes to determine the adv curve in the DUI distributor. After you power time the ign let the motor come back to idle. Hit the pointer with the timing light and record the initial adv. Then slowly raise the rpm until the adv starts to move. Record this rpm. Then slowly keep raising the rpm until the adv ceases and record this rpm. Recording a couple of intermediate rpms points would give you the basic centrifugal advance curve. Then you could compare this to the digital ign to see where the differences are.
I’m sold. Ordering mine at the end of the month
Very objective! Thanks!
I, do like MSD ignition. But, it's a big box, with a small module in it. If, youve ever seen the inside of one. Quality, ready to run distributors, are as good. Sometimes, better. Depending, on the distributor. But, you do have to make sure, your connections are good.😃
Hi Andy. Another great video. You gained a lot of respect when you change distributors in the first video. Even though you were wearing a hat for one you swapped out because it was breaking up. No bias which was cool.
You must have a difference in the ignition curve. There's only so much coil dwell available. On my hot rod engines I have them locked out as I don't need a curve. If I had nitrous or other set-up being able to program your timing is very advantageous.
That's the point.
Progressive is better controlled and adjustable.
I think a DV experiment caused the jersey earthquake
This man is impressive and his Name is Andy the best Blue Oval Ford Performance Man and he works with a good guy named David and they are going to keep the bar going up and up! The question is what is the top of the bar and how high does it eventually go, that's the best "Question ❓⁉️
You'd pick up so much in the middle and cap at 6500 if you ran a duel plane rpm airgap. I used to be like you but lately been dyno testing things I didn't actually think would work. Like the duel plane. Try it on the sleeper!
I just yesterday installed one of these in what is basically a pro touring ‘70 chevelle with a decent built aluminum head 400. Let me tell you guys, this distributor does exactly what you tell it to do. If you want lightening quick tuning without a ton of hassle this is the distributor you want. ❤
I didn’t even know if its existence until Andy’s first video about it.
Keep up the good work Andy! 😊
Thanks for the kind words! It's an amazing distributor
Andy
@@UnityMotorSportsGarage Andy , It is because of your prior videos i bought one of these distributors. I cant get my top end timing to what my car likes no mater how i try its got excellent low and mid range but cuts out at 4k plus rpm. little stutter then it dosnt like my higher end timming. I have always had a large gauge wire 12volt from my fuse panel on its own circuit I have always run a msd pro billet i curved myself years ago and it is perfect. i really want to get this up and tuned right I am running a street med range performance home build SB 400 stock new bottom end comp cam ex 268 DUAL plain airgap intake a 750 edelbrock AVS 2 the cam is ground 2 degrees advanced and i have timing chain setup to 4 degrees advance as well port and polished 202 HEADS, headers and 3" duals with H PIPE single chamber so good flow in and out of ngine.. 3000rpm stall hole shot. 308 rear end the car is a 1972 Caprice old school muscle build you can check out my 2 car vids and motor on my youtube channel to get an idea of how it runs right now. its a low rpm torque monster its happy to 5,000 rpm best power range is 3k to 4k rpm Would you be willing to share a screen shot of your timing table and setup screen settings with me I would really appreciate it. It would mean a lot to get this up and going this is my first car wen I was 15yo resto done in 1996 owned ever since I see the potential this ignition has i just cant get my chart set . I would like to try your setup sounds like you know what an over all good street tune would be. I'm in the 400hp 450 trq range on 103 octane it comes in right at 10-1 compression by the numbers when we built the motor in 1996 my dad and
my name is Mike my email you could send the info to is z71offroad2000@msn.com HOPE TO HEAR FROM YOU THANKS.
I think it’s awesome!
Yeah, the results pretty much speak for themselves.. Thanks for watching
Andy
Davis Unified are still atrong units! Im still getting a Progression for my sbc 400 .060 over w/Airflow research 220's. Down with the sickness!
It would be interesting to see what an MSD box does on this engine.
Remember, MSD is multi spark low down, and only a single spark above 3,000 rpm on a V8.
But it blows a big flame.👍
Interesting stuff....I noticed a difference in the amount and timing of the torque with the progression. I think you'd feel that,
I wonder why the hp. difference on the top end. Both units are all in....Thanks for sharing
I heard about the progression ignition a while back, and I have been sitting on a decision to try it. With this test, it's time to make a move and try it. I am not sure on how to determine a curve to start with but got to give it a try. No weights, springs, no problem.
Love you brother
Definitely for the torque increase.
Hello Andy are you still selling merchandise -Tee shirts
Awesome
I know you might not be comfortable in the dyno room , with the light on the damper , at peak power , 65 hundred RPM , but I won't like it till you do it on both .
Question for you. I have a 408 sbc solid roller about 780 hp conservative and a Progression ignition, 850 ATM CARBURETOR I drive on the street, basically its a circletrack race engine. Fuel is 104 octane. It's not happy with less then idle 22* timing. What resistor sparkplugs are you running? What gap? And are you having to change the curve or are you going with the progression ignition generated curve? Thank for the knowledge and great videos.
@josephverdone What cylinder head do u have!?
@MrsSunshine75 the Heads are a Brodix were built in 92 and a cross between a Dragon slayer and pro head. Sammy Swindell engine builder ported them. A brodix 1000 manifold, 14.1 compression, Manley rods, pistons,Comp Cam.
🔔😎🇺🇸
What did you ever do with that Casper hood scoop debacle? 😳🤔
What was biggest torque gain
So did the Progression have earlier advance in the curve than the DUI? Side note: Make sure you have minimum 12V from the switched power to the Progression. Mine had a slight miss in a specific rpm range and that was the culprit. 🤦♂️
13.8 is full system voltage.
I disagree with the guys who switch off their alternator when racing.... All they get is about 12.2 volts when the ignition is sucking amps out of the battery.😊
This is my first time hearing the term "progression ignition". What does that mean??
If the total timing is 34 on both. Should not the total be in by 3,000 rpm? There is more to this than what is said here.
I’m wondering why ? It seems to me that the progression ignition should be a lot closer in horsepower and torque to the DUI distributor and that is assuming the results are taken after the loose 12 V power wire was repaired maybe you and DV could launch an investigation I think that would be a really cool video
The Progression Ignition came out on top!
Thanks for watching
Andy
@@UnityMotorSportsGarage sorry dude I’m gonna go back and rewatch the video hopefully uninterrupted this time because everybody on the face of the planet decided to call me because their cars are broke and they want me to fix them while I was right in the middle of the video. Lol.
I also really like that progression ignition set up that’s pretty cool I’m currently putting together a Cleveland for my 71 Torino GT and I’m going to run that distributor
What was Caspers best mpg since the dominators? What cruise rpm
700 HP race truck:
If you have to ask you can't afford it. 😆😆😆😆😆
You appearantly havent been following unity for long if you think he's not after good mpg also @hotrodray6802
Hola andy un saludo desde Cuba
Que voíla! My high school Spanish teacher was Cuban
@@WesternReloader hola
If you have ever watch the timing changes on a modern coil on plug engine. You would notice a wide deviation in ignition timing depending on rpm, throttle position and I'm guessing emissions. I'm guessing that the drivability can be helped on a daily driver with programable ignition.
Same coil on both?
YUP! And cap and rotor..
Andy
@@UnityMotorSportsGarage interesting.
@@UnityMotorSportsGarage
And WIRES and plugs
@@hotrodray6802 absolutely
What would a magneto ignition do?
I have never tested one but David has told me it takes a good amount of power to drive a mag!
Andy
Slow you down.
They don't make the spark like modern electronic stuff... But they're independent of your system voltage.
BTDT circle track.
I've run a well tuned duraspark, on a bone stock 302-79 mustang that beat an 83 corvette( the vette had issues) Also ran a 429 on propane- HEI module on a duraspark distributor with an E-coil, and it ran as good as a MSD 6AL. Still have both, HEI as backup. Then, bought a Progressive Ignition distributor, still in the box. Can't wait to try it!
Well tuned carb, sharp ignition, good wires and plugs=Good to go!
An 83 vette huh? Lol!
83 vette. Uh huh.
Fuckin rights, pegged the 180kph speedo
You musta been the guy in the vette, LOL
@@danderson9881
Chevy never sold a 1983 model year Corvette. You have been caught in your own lie.
@@everettdean1215 Thanks for being such a gentleman and accuse me of lying. I could care less what year it was, it was a shitty corvette, I pulled up on it, and the junk chevy blew out a cloud of blue smoke, then the race was on.
Yeah, but dont those Progression Ignitions have like a high performance, average and economy mode from what I remember? Thats what I'm curious about. Most people that buy those dont have race engines I think.
🥝✔️
I would rather walk then tune my classic with a cell phone!
I felt that way until I used it.
Andy
It is absolutely amazing distributor. No more springs
Times have changed.. and for the most part better as far as hp/tq and reliability and fuel mileage
The simplicity of yesterday's cars and trucks is therapeutic for me!!
I'd recommend wrenches screwdrivers and a vacuum gauge
What is on the Y-axis, MAP or load percentage? Now that you have tested back to back ramp up advance with a few degrees at higher rpm and see what it does. No need to stick to that maximum 34 degrees that probably originate from what mechanical advance could reach.
Timing is determined by chambers.
Are you saying that a weaker spark needs more advance ?
@@hotrodray6802 I didn't consider weak or strong spark but as the burning of the fuel takes a specific amount of time I'd reckon starting earlier higher in the rev range you may have the maximum pushing force at a more fitting time. That 34-36 degrees is typical for mid range between 3000-4000 rpm. I converted to Megajolt about 12 years ago and gone through quite a few maps published by users on their site. 34-36 degrees was used on all kind of engines, big and small, on mid range. I went up a bit and it surely did't harm. Using it on a 1.5L V4 with bog standard cam that doesn't allow much more than 5500rpm the engine feels peppier over 4000rpm. Megajolt uses either Manifold Absolute Pressure or load percentage. MAP is measured in KPa, where ambient air pressure is about 102 KPa, maybe 100, don't recall. As the load factor on the Y-axis of the map Andy showed shortly goes up to 101 I was wondering if it represents air pressure or percentage. You can get a little over pressure at higher speeds, the engine room of a Saab Sonett is tiny with little escape possibilities for the air once it has gone through the radiator.
Next Time Andy Compare with a Locked out Advance or Fixed No Advance HEI Against the Progression Ignition. Be interesting to see those results.
I can see the advantages of an ignition system that can be tuned with a smartphone. But i'm old school and just like a normal HEI system. Call me crazy but i actually think the stock distributor works fine for low rpm if you know what your doing with a timing light, and changing out vacuum advances based on your cam and vacuum.
problemm with old HEI is it cannot limit the mechanical enough if you need it to. this will because you can make it whatever you want. most HEI have a mechanical advance of 24 degrees. even the aftermarket stuff. they will just give you lighter springs
so now what happens when your engine wants 36 total up top but wants 16-18 of initial down low?
you can't do it with an HEI. youd have to have this
don't think you mentioned what the curves were for both distributors ?
Could you have found the problems with a distributor checking machine first?