So I finished installing a MD, DP, wideband, and Pettit Racing ECU. The car has a Greddy stock mount IC, Greddy intake, pullies, etc. I thought that I was screwed and that I woul dneed to limit the boost to 12psi, but apparently not. My AFRs read 10.9-11.2 at 14-15psi all the way to redline. I only need to complete my non-sequential setup and I should be set. I am happy. Those are good AFRs, right? Thanks

 

Ok!

 

**** thats better than what the "worlds best rotary tuners" are getting. the propaganda that runs around this forum is just awful.

dont.....dont.....dont believe the hype.

 

I have seen a lot of fds blow up running that ecu without some type of boost restriction. Please understand what type of injector duty cycles you are running with that setup. There is no way at above 90% you are getting any type of consistent injection. Believe me if you want or not but it wont last long at anything above 13psi. Its even on the line at that.

 

Would I be able to control 4 850cc injectors with the Pettit ECU or do I need a PFC or other fuel controller? Pump?

Oh, I am at 3500ft of elevation.

 

All of the chipped stock ECU's (pettit included) are limited to the stock fuel injectors. Once you upgrade the injectors you need a stand-alone ECU such as the power fc.

 

Hmmmm....damn....OK....thanks for the info.

 

wow... nice AFRs

for street... 10.8-11.5 is PERFECT

 

you're out of injector and something bad will happen soon.

 

OK, I better slow down then. Thanks...so 13 psi tops. Much appreciated.