PDA

View Full Version : air fuel ratio ???s



polish dude
06-08-2008, 03:27 AM
i finaly got wide band and it was totaly worth it. but to be able to use it right i need to knwo some stuff.
i know 14.7 is stoich but what's optimum for 3sgte second gen.
i know anything over 14.7 is bad couse detonations but could to rich be dangerouse too. i played with my car today and i noticed that the car dies at idle below 10.5. is it dangarues or do i have room to play with.

T-spoon
06-08-2008, 03:40 AM
i finaly got wide band and it was totaly worth it. but to be able to use it right i need to knwo some stuff.
i know 14.7 is stoich but what's optimum for 3sgte second gen.
i know anything over 14.7 is bad couse detonations but could to rich be dangerouse too. i played with my car today and i noticed that the car dies at idle below 10.5. is it dangarues or do i have room to play with.

Yes, too rich is not good either

sloceli
06-08-2008, 03:41 AM
Depends, In open loop (idle cruse you will see 12-15:1) closed loop 12.9-8:1. It all depends on how much boost your running. If your on a stock CT26 you can see 9:1. Optimum would be 11.5 on a mildly boosted engine.