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09-23-2011, 05:14 PM | #1 |
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Vishnu Procede PWM Meth on Supercharged Darth Maul M3
Hi guys,
Another Procede+PWM Meth update/case study. Yesterday, the owner of the "Darth Maul" M3 drove down from Canada to get a Procede/Meth kit combo installed. For those who aren't familiar with this car, it was a pretty well-known show car a few years ago. It was fitted with a bunch of upgrades including a G-Power supercharger WITH intercooler. Max boost pressure was around 6psi, give or take. We did not make any changes to they pulleys/boost pressure. All we did was install a Procede+PWM Meth kit and spent a few runs re-tuning it. The car is intercooled (as you can see in the pics) and a LARGE 3 horsepower fan was placed in front of it during the pulls. Without methanol, logged IATs on the dyno were actually a little bit lower than what we see on the street. First two runs, with perfectly cooled engine (with Procede and meth disabled): Then we simply turned out the PWM meth system. Unlike traditional meth systems, this is metered with a high speed valve which is controlled by the Procede. No changes to actual tuning at this point. With meth on, we picked up some good gains: Next, we tweaked AFR slightly and added a few deg of ignition advance (via Procede). And since the Procede controls the tune as well as the methanol system, this extra advance and revised AFR only comes into play when methanol is flowing (monitored by flow turbine tube generating a 5v digital signal via hall effects sensor). More power was picked up: After a bit of cool down, we ran the original G-Power DME tune (Procede and Meth disabled) again. This way we aren't comparing runs on a cold engine (Run 1 and 2) to runs on a warm engine (all the rest). The delta was huge: So there you have it. Adding a Procede+PWM Meth kit on a mildly boosted M3 that ALREADY has a intercooler was worth as much as 80WHP up top. With nice gains everywhere. Furthermore, the results were consistent and very resistant to heatsoak. Which makes the real-world performance delta even bigger. I have plenty of datalogs that I will post up later. This is the first Sc'd m3 I've tuned but from what I can tell, it's begging for more boost. Unfortunately, the owner wasn't able to get hands on a new pulley in time. But soon.... This is the same Procede/pwm meth combo that we used in Zoebs NA m3 last week. The only difference is that we are using a higher flowing valve and three 1pm nozzles instead of two. They were mounted in the cone shaped silicon coupler just upstream of the plenum. Underneath so you can't even see them. Cheers, shiv Last edited by OpenFlash; 09-23-2011 at 08:55 PM.. |
09-23-2011, 05:25 PM | #2 |
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Congrats! I'm excited to see this in operation....on my car!
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09-23-2011, 05:51 PM | #3 |
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Amazing !
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09-23-2011, 06:46 PM | #7 |
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Never cease to amaze me Shiv. Excellent work. I dying to know what it would make with some more boost.
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09-23-2011, 07:31 PM | #9 |
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Shiv = Brilliant
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09-23-2011, 07:51 PM | #10 |
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Wow, I'm speechless. Great work.
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09-23-2011, 08:15 PM | #11 |
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so what your saying is that without changing a tune on a 6psi G-power SKII your gaining about 32whp?
what are the temp. like where you are? and what does this kit look like? what 70% of meth is added? mixed with water???
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09-23-2011, 08:50 PM | #12 | |
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Quote:
Yes, it picked up approx 30whp with no active changes to tuning. The DME simply ran it's ignition timing targets and the engine ran a cooler, denser air charge. For example, without meth, IATs climbed from 35degC to 55degC. WITH METH, they DROPPED from 35degC to 15degC. Some pretty big passive gains right there. I'd be very interested in running this set-up on a non-intercooled set-up since they seem to be so popular. I'd imagine bigger relative gains that what we saw today since the temp drop would be so much more significant. Plus, we could undoubtedly run a higher boost pulley since the meth would perform better than any intercooler upgrade. Cheers shiv |
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09-23-2011, 08:59 PM | #13 | |
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I think ESS and Gintani uses a water to air cooling (will it make a difference? better or worse?) AA and Gpower uses a air to air so I guess the results will be similar? the Gpower intercooler is very large in size as well. also where are the 3 nozzals installed? my car is pushing 15psi right now and I'm just using an AEM meth injection for cooling only but I don't think the car is cooling down enough because our weather in Taiwan is very humid (90%+)and hot! so basically if I can get my car down cooler I think the will be even better at 15psi it should make?.....60whp difference???
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09-23-2011, 09:09 PM | #14 | |
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09-23-2011, 10:48 PM | #15 |
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Thanks for the kind words guys. I should have some more kit info in the upcoming week. But if there is anyone, who is willing to make the drive to the SF Bay area, is interested in a Procede/PWM meth kit combo (either NA or supercharged), feel free to email me at shiv@vishnutuning.com. I'm looking to get more dyno results for testing purposes and the more types of modifications I see, the better for everyone
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09-23-2011, 11:29 PM | #16 | |
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well my tune is based on a non meth so that is why I'm wondering if I switch a set up will it help and about how much. lets just say the IAT's are the same but I'm just running higher boost what kind of differences will we see. and if they are 3 places where meth is injected where are they located to reach its cool max. potential?
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09-23-2011, 11:39 PM | #17 | |
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Grrrrr Amazine results Shiv. This is just plain awesome.
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09-24-2011, 12:23 AM | #18 |
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09-24-2011, 12:28 AM | #19 |
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Shiv - Will the Proceed be a piggyback that controls the meth kit as well as delimiting the top speed governor and deleting the cat inefficiency codes?
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09-24-2011, 12:30 AM | #20 |
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09-24-2011, 12:53 AM | #21 |
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09-24-2011, 01:21 AM | #22 |
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