Quote: Originally Posted by duster360
Quote: Originally Posted by ImportLabSRT4
Maybe Im reading this way wrong but... If stage 2 injectors are considered to flow 769cc at 58psi (RC fluid) and RC 750's flow 866ccs at 58psi, then I should start by pulling 11% fuel globaly? Or for that matter if static pressure is 43.5psi ([659/750]-1) then pull 12% of fuel globaly??
~~After looking more closely (once again I may be retarded here), but If I have a stage 2 PCM (stg 2 injectors = 761.6 cc's @58psi) and run my RC 750's at 43psi.... shouldnt I be adding 1.5% of fuel as a baseline?(761.6/750-1= .015xxx)
Your right in your % of fuel but the actual % you are "pulling" is a % of voltage from the map sensor. A 5% change in Map voltage rarely, if ever, equals a 5% reduction in injector pulse-width.
Correct... it more of just a starting point. I have tried to tune the car anywhere from 35psi of fuel pressure + rising rate all the way up to 58psi static and it seems that the car runs the best at 58psi static. I still think the 750's are dumping way to much fuel but I really dont have much of a choice because my stage 2 couldnt keep up with the 50 trim.
