Originally Posted by
mbray01
I have my suspicions about what Im dealing with, but looking for some second thoughts. have a roush blower on an otherwise stock 4.6. FBFG2TF CALIBRATION.
2 biggest issues are 30+% fuel trims that i cannot clear, tried clearing kam with multiple different devices, trims are still there, trying to tune around it, doesnt work, because its never the same, may be 30% one pull, 41 the next, 34 the follow and so on. also tuning around it changes load drastically.
second issue is ecm does not follow timing schedule Put 5+* in entire borderline, and 10* in mbt, make a pull and it is still climbing to 22*, total. cant wrap my head around why cam wont clear, and why ecm is not following timing tables