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**asshanson** · 03-18-2008

I bought some used PTE 880s yesterday (Aaron's from last year), got them installed last night (in the snow), but the car was having idle problems. I figured I just had to adjust the AFC since they're decently bigger than the 660s I had before.

I take out 20% fuel because it was really rich, but then the A/F ratio on the wideband goes really lean. So I change it to -10%, ratio goes to 14/1 for awhile, then gets lean again. Now I have it at 0% for 1000rpm which is what it was at for my 660s before.

When you first install injectors, does it take a few minutes for them to break-in or get used to having fuel in them again? Also, why is the correction factor almost zero at low RPMs for the bigger injectors?

03-18-2008	#1
asshanson immune from paybans Join Date: Oct 2005 Location: West Des Moines Drives: poorly Posts: 4,358	Settings for my new injectors I bought some used PTE 880s yesterday (Aaron's from last year), got them installed last night (in the snow), but the car was having idle problems. I figured I just had to adjust the AFC since they're decently bigger than the 660s I had before. I take out 20% fuel because it was really rich, but then the A/F ratio on the wideband goes really lean. So I change it to -10%, ratio goes to 14/1 for awhile, then gets lean again. Now I have it at 0% for 1000rpm which is what it was at for my 660s before. When you first install injectors, does it take a few minutes for them to break-in or get used to having fuel in them again? Also, why is the correction factor almost zero at low RPMs for the bigger injectors?