How stable should AFR/Lambda be at idle?

hobieboy · Post by **hobieboy** » Sat Aug 19, 2006 4:45 pm

As the title said... in my case, my AFR oscillates between 13.5 and 12.8 (yes - I want to start with running way rich as I need the engine to be around 11.9 at full boost).

Is that too much variance? What typically will make it more stable - timing/fuel/...?

thanks.

TPI 85 Blazer · Post by **TPI 85 Blazer** » Mon Aug 21, 2006 5:02 am

Is map or rpm changing so that the VE is changing?

hobieboy · Post by **hobieboy** » Mon Aug 21, 2006 5:49 am

Actually, nothing seems to be changing. MAP is very stable. The VE is changing maybe by 1%; probably due to RPM changes.