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Old Jul 28, 2012 | 09:04 AM
  #84 (permalink)  
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velociabstract
Senior Member
Joined: Jul 2008
Posts: 4,525
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From: Puerto Rico
Default Re: Going to inject it with water/xxx

I'm back with updates. Better late than never. I spent an hour or so on the dyno doing nothing more than playing with the injection. My purpose was to use the injection to reach the AFR's that I want. (lean tune) The tank has 2 pints of alcohol and distilled water. I poured in the 2 pints and topped off the stock washer tank so the exact mixture is a mystery but I imagine around 60/40 water to alcohol. The adjustment screws don't have numbers on them, just slash marks so to have an idea where it's at it's necessary to go to 0 and count as you turn the screw. I tried just about every combination. Spraying early, intermediate and late. Reaching full volume early late and never etc. and all combinations in between. For my purposes the best setting has it coming on around 10 PSI and I have the maximum set at 30 PSI. In other words, it never reaches full volume. This is with the 5 gph nozzle (315cc). No horsepower increase from spraying. None. These kits make power because they allow you to take risks with extra timing Y/O a leaner mixture. At this point in time I'm not willing to risk much. Perhaps in the future I'll get an Eurotuner for multiple tunes. With my setup I have the option of using less meth for more power (leaner mixture) if I grow a pair big enough. I've used my car with 104 octane and AFR's around 13 with no ill effects but ... the swelling went down and I decided safe is better. With AFR's in the mid 13's I make 25 more HP and 15 ft. lbs. more torque for reference. As far as cooling the IAT's .... so far I don't have enough data but it's minimal at best. Spraying through the supercharger and the intercooler won't allow much. The intercooler reheats the air. The supercharger stays cool. Any questions Doc? My early conclusions are, tune for it and don't you dare come close to running out or BOOM. If you want lower IAT's don't spray before the throttle body.

Les
 
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