ok now that my hot rod is running a little better!!tonight i started data logging the injector duty cycle,map sensor,RPM,ignition timing the most important ones!!with this C4 transmission the torque converter stalls at 7000 rpm,the map sensor is at 27 pounds of boost up against the trans brake and my injector duty cycle is at 100%!!!!.i have 4 160 pound injectors!!!E85 fuel!!!at 25-26 pounds the duty cycle is still in the 90's.my real question is at 7000 rpm,27 pounds of boost i am at 4.4ms of injection time in my fuel map!!!but at 7000 rpm it takes 8.5ms to complete one E-shaft rotation!!!so that leaves me 4.1ms of time for the ECU to compute the next cycle.to me this seems like APRX 50% duty cycle???is there a standard "rest"time the ECU needs to compute the next cycle?does the ECU need half of the time in MS per E-shaft rotation to compute the next cycle???just a little confused with the injector duty cycle calculation and the time the ECU needs for it's next cycle???i think i am having a problem with the rotary split but lets get to the bottom of this question first!!!thank you i hope this question is not considered STUPID?!?!?!

 

Are you running sequential or batch injection? 4.1ms (+lag time) X 2 could be giving you the 100% your talking about. Also you have to watch which opening you are looking at I believe it changes based what you view, I believe thats the case but its been a while since I've looked at a log with an E8. I don't know how much fuel pressure your running but 4x160's with E85 would only be good to the 500-600 whp range. So 100% does sound correct especially for any 13b running 26-27 psi.

Post a log and I'll take a look.