when i have WOT my wideband says im running WAYYY too lean like average is around 11.5 but ive seen it go to 10.0.

and

when i let the car coast with no throttle my wideband says im running WAYYY too rich...it redlines to where the wideband shows (----) or whatever.

im thinking its that i need a retune i got my tune 8 months ago.

or

i just put a 3 inch greddy intercooler in, could it be that its too cold and alot of air (i live in chicago)

PLEASE HELP!!! lol thank you!

 

someone correct me if im wrong but i thought the lower the number the richer your car is running. higher/leaner etc

 

11.5 is perfectly find if tuned

porsherules911 is right high numbers are rich

there is nothing wrong with your car

 

oh and i forgot its back firing like crazzzy and the idol is jumpy

 

11.5 @ WOT is fine, 10.0 is too rich if you are getting that often. When you let off the gas and let the car coast it isnt burning any fuel. It's supposed to do that, so your wideband will show ---. Besides the 10.0 occurrences there seems to be nothing wrong.

 

11.5 is fine ,,,over 13 is lean and under 11 is rich ...

 

Is this a new scale?

I always thought > 14.7 was lean and < 14.7 is rich for gasoline. At 13 afr theres still no free O2 remaining so it'srich, might not be rich enough at WOT if that's what you mean but I get up there in lower gears although not recommended for typical tune.

 

Yea he's referring to WOT conditions. At idle/cruise 14.7 is ideal, it should just jump around there give or take .5 every once in a while.