phatnackySS

so i just installed mototron 80 lb injectors (SEM-110324-4) I used omegas spreed sheet and it the car ran fine but was rather rich. I adjusted the maf , but feel as if this wasn't the best way to go because some of the afr error values were as big as -20. this large of a maf adjustment shifted the cylinder air mass calculation in the upper RPM range at wot from .96-1.00 to .88-.96 which intern made the car command some rather aggressive timing which resulted in some knock. I adjusted the spark table (less advanced in areas of concern) but i was just wondering if anyone else experienced this while swapping in 80lb injectors.Would logging AFR errors against vacuum and adjusting the injector flow be better than skewing the maf?
The car currently runs great aside from some minor hunting when coming of throttle going to idle.

Posted over on the HPT site if you want to view the files.
80lb Injector LSJ question

09CobaltSS1

Try lowering your flow rate modifier a bit from 1.8 to 1.5 and see if that helps at all.

phatnackySS

about.. the Flow rate vs battery voltage modifier... i played with it ...and it seems like it really doesn't much if anything at all...seems like it runs the same at one as it dose at 2. kinda makes me wonder if it could be because the table stops at 13v and the car runs around 13.6 to 14.5 volts when running... i also played with the pws again , and while i got results i wasn't happy with them (hunting and bucking on desecration...so on ) really starting to look like re scaling the maf and readjusting everything that has to do with airmass ...

army_greywolf

iTrader: (2)

email me your tune, I'll look at it and send you correct 80s rates and offsets.

army_greywolf@yahoo.com