[quote="DarthChicken"]
Bolus and I already went down the peltier route... there's no way you could use one, its just not efficient enough. The calucations said something huge would be needed.
My tune - timing on the stock ecu is VERY conservative. I'm running exactly what you are saying now - 11.8 to 12 with water injection. I won't use methanol, because I've seen too many clogged nozzles/crapped out pumps/faulty wiring end up destroying an engine from detonation (none of my engines btw... I just won't rely on the technology, where its currently at). I'm using water only, and only to cool the intake charge (which I've found to be VERY effective).
I hit 260whp very easily when I started tuning... but that was without doing ANYTHING with the fueling past 5500rpm. I've since added some fuel (it was running close to 12.5) and added in some timing. I'm guessing 275whp or so with the stock 2.9" pulley. But we'll never know, because I moved to a 2.8" pulley, which is as small as I'll go, on an eaton that will be run hard at the track. My goal is 290whp or so with that setup, and having it hold together.
Midrange I saw huge improvements, along the lines of 20ft lbs. I also smoothed the tune quite a bit, there were places the car was actually losing power through the rpm range and then coming back.
And then... I have 10.5:1 compression pistons sitting in the garage, ready to go in. With those, I can lower the boost down a bit so I'm not overspinning the sh1t out of the supercharger, lowering the IAT2, and get the same power. Or... maybe I'll just leave the 2.8" on and get to 300+whp
Here's my last dyno... again.. .this is without any fuel tuning above 5500rpm, and you can see how the torque dropped off as a result when I had to cut back on my timing as a result.
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I dont know what experimenting you may have done with peltier units. But this:
Makes me a firm believer it can be done. This heat exchanger is cooling a soon to be 700 plus horsepower ecotec.
Also for our cars you dont start over spinning the blower until u hit the 2.6 pulley and anything over 6k rpms.
And if your talking about lowering boost to stop overspinning, do u mean dropping pulley sizes? or just controlling boost via your tuning software?