I have a 2002 camaro and before i had headers, dual exhaust, with some sort of cam (had it in when i bought car so don't know what it is), and then i put a racetronix fuel pump in and had setup and tuned it on e85.
Now I built a turbo kit for it with cast manifolds, swapped out the stock 28lbs injectors for some 1000cc injectors (1155cc at 4bar). I put a second pump in the tank, removed fuel pressure regulator, and set it up as a return system with a regulator after the rails. Car is still on e85, and i removed the maf. Running a 3 bar map.
I took the tune that was running in the car from before and followed the custom os tutorial to copy and paste it into cos 5. I can not get the car to stay running under about 2000rpms. If i hold the throttle to the floor it will start up and then i have to hold rpms at 2000 or it will die. I think it is something with my injector flow rate.
To tune the car on e85 originally I was lazy and modified the IFR table by 30% less so I didn't have to change all other tables, and i got it tuned in and running really well. How i did this is i took all the vales in the IFR and multiplied them by .7
My question is if the stock injectors are rated at 28lbs at 58psi? Since the tune I'm starting with is setup based on a 30% less IFR do i set my regulator to 58psi then take 1155 (rating of injectors at 58psi), and multiply them by .7 and enter that value? So my IFR table would have a value of 76.909 and this value would be the same throughout the table since it is a rising rate regulator? Because i tried this and still can't get car to idle.
any and all idea's are welcome, i was actually thinking about swapping back the 28lbs injectors to see if that would work and put the tune back in it had before. Since i'm not running the maf anymore if i put the old tune in would it be good enough to start up and idle?