| :lean it out maximum and run rich? I have the JWT ecu so does PUNKZ and it pegs at 11.5 :1 ratio which is where you want to be. I think because you are running two fuel pumps that the excess fuel cannot return to tank fast enough. I agree about the two fuel pumps. Pete, the 740cc program from JWT is way better than 720cc IMO because theyare actually using 740cc on the SCC car, the 720cc program is theoretical as far as I know. On the other hand, I also agree that the most efficient way to tune the car with big turbos, you need a stand alone system. The piggy back controllers will probably work well with most cars except for setups like yours with twin fuel pumps etc.
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