Originally Posted by
tryskriel
I have a 05 Mustang GT supercharged with a M90 Roush kit running 6psi with some BBK long tube headers
Running the 38lbs injectors from Roush
I did read the stock Roush program but it was always way too lean so i did enrich the MAF voltage table a lot.
It's almost finally tuned but for the part throttle tuning, the car will lose power when AFR goes in the 10:1 and 18:1 range and you can feel the car lose power. My fuel trim are not so bad, not perfect but within the 10% range. When i adjust them, at the same MAF Voltage, sometimes the fuel trim are positive and sometimes negative so i let them that way because they are always varying.
On others cars i have tune, the AFR is always stable, goes from 14:00 to 15:00 but on this car it seem to go from 12:40 to 18:00. Anyway of getting the closed loop system to work fine.
I did try to disable LTFT, play with OL Delay Ramp and blend ramp. I did try to run it always in OL setting all value in Fuel value TPS to ""0"" without succes.
Can i play with transport delay to adjust the way the CL will work ?
Thanks for any advice
Fred