Thread: Knock at idle?
View Single Post
Old 09-24-2009, 09:54 AM   #7
Scooby Specialist
Member#: 156973
Join Date: Aug 2007
Chapter/Region: International
Location: Adelaide, Australia
2002 ADM WRX STi
STi Black/Blue


What do you mean by rich AFR at idle?

After you initially start the car it will run a little rich until the enrichment comp is over, but then it should go to normal CL target (around 14.6 or whatever).

So once you start the car, if it doesn't start targeting your CL AFR target in around 10seconds (assuming your engine is already warmed up), then something else is wrong.

Do you still have stock injectors and airfilter box/MAF?

* Registered users of the site do not see these ads.
wrxsti.l is offline   Reply With Quote