Quote:
Originally Posted by steve99
Ignition timing will vary with load,throttle position rpm ect their are heaps of maps in play you need to log a lot of inputs to see whats going on.
have a look at your long term fuel trims LTFT across the rpm band, it will change but high fuel trims in lower rpm bands like 10% can indicate intake\exhaust leaks
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I found the culprit it's my headers it's leaking from an elbow something like white fussy paper type looking thing. On the passenger side changing the transmission oil today I looked into that and when it was gassed it blue out some air from there not alot but enough to call it a leak it's going in on Monday so they can find out what it is but I will tell then so they can get right into it.