Originally Posted by HDDP
Yeah, I learned that the ECU is retarding the timing on an average of -30 degrees and both long term and short term fuel trim is leaning out -30% avg... This is occurring at idle and WOT under full load...
???
I noticed that and the Vac from 5-(28) which seems high as well, but could be a spike from tb closing that was captured.
Some logs when the weather is cool would help tell if it's fully temp related on the FT of 40%
I expected around 20 % so there is enough available for cold start and for sudden enrichment, and the margin to allow some dwell time on the seat, so you don't have 100% duty cycle. The other 20 could be density?
Very good data to help us learn how to tweak their one size fits all PCM.
Dale