what r optimal afr's under boost??? 11-11.5-12???? and at idle??? got a single turbo FD with a pfc...ive been tuning for a while....only my car....just curious what is optimal

 

It depends on your boost level and fuel, ai, ect. I see you are in socal so I assume 91 octane. For boost something around 11.5 at 10psi, 11 at 14 and 10.8 at 16psi and above should be a good start. I wouldn't recommend 12 anywhere near full boost especially on our **** fuel here. For idle 13-13.5 is a good target but really you want to set it as lean as you can while still having good idle quality, helps keep the smell down and the plugs clean.

 

NICE!!! thanks for the info

 

are you tuning with a Datalogit?

 

Yes sir

 

My idle is ~ 10.5-11.5. Rotang has never smelled so strong. I need to fix my idle/low rpm afrs... :P

 

what is your fuel system?

 

Are you a member of the tuning group? Arghx posted some nice charts in there that shows target AFR's in conservative, moderate and aggressive versions across the whole 20x20 grid, pretty handy.

 

the whole thing just needs to be moved out of yahoo...