Does anyone know what the AF should be at idle, I thought it was around 14 ish when not in any kind of load.

 

yes, Gasoline Stoichiometric is 14.7..pretty much any cruising should be around 14.5-15.0

 

Thanks, then there is something wrong with mine as it now idles at 10 which is probably why I have started to see a stalling issue when coming to stop signs and lights.

 

try resetting the ecu and see if it goes back to normal

 

my AFR's dont work at idle lol

 

^^^^


I'm using the HKS Air Fuel Knock Amp, and they have AF 1 and AF 2 on there, my AF 1 always reads in the 15s at idles but sometimes go into the 14s, my AF 2 is always in the 14s but can jump to 15 and back down. If its at 10 I'd be freaking out, guess its time to take that trip back to GTM if worse comes to worse, we both know it will leave the shop 100%.

 

hks ftl

 

my idle was all over cause I had a vaccum leak now it should hold strong at 14's

 

i wouldnt drive it for very long with a 10:1 afr, it doesnt take long for the oil to get saturated with gasoline and cause some major problems

 

I had my AFR at 10 right after I reconnected my intake tube from a spark plug change. I forgot to reconnect my re-cirv valve, so maybe your BOV came loose or something?

 

Thanks guys, well it is fixed. I did not drive the car at all while it was in this condition but called Sam and he told me to get to the FCon and click switch 5 and try it again, well it worked and all is back to normal.

Looks like it got caught in some kind of closed loop and would not reset itself.

Back to boosting again, boy it was a hard 3 days without the car

I thought it was the BOV but it is the stock APS one and is still all connected and I also checked for boost leaks but could not find any either.

 

thats right!!!

 

My A/F on both banks are typically between 14.2 and 15.1 at idle.