RED2K

Since my cam swap i have been running rich. What do I need to tell them to change at Diablo?

one03sierra

iTrader: (1)

look at your fuel trims.long term.cruise at 70mph and get the readings. the max you should see is +1.56.if you areb getting more than this then you are lean.if they are negative then you are rich.mine ran around -1.78.good luck buddy.

Ram4Pick

Ditto from above! From what I've been told, you want +1.56% on your long term fuel trims and 0.00% at WOT. I played with mine to much at the start, started adjusting the spark and fuel trims after about 2 days, I put it all back to stock, loaded the performance program and just adjusted the tranny shift points, firmness, etc.. I'm going to give each change a full tank of gas to let the ECM have time to adjust fully. When I check my fuel trims, they pretty much fluctuate the whole time, it's hard to get a good reading while cruising. Any little change in speed or pedal position and the start to fluctuate. Make small adjusts and give the ECM time to adjust over time is my suggestion from my experiences so far.
Jim