When I first installed my AEM wideband, at idle, the afr was in the 14's and 15's, always staying in the yellow. Yesterday I noticed that at idle, the afr is 16-18 and idle isn't as smooth as it was a day ago. I have been driving it like normal, I haven't played with my SAFC2, the only thing that I changed is the oil. I am not sure if this is important or not, but Im alittle confused and I hope someone can help shed some light on this subject.

 

is it at that more when you first start it up, or does it do it at idle even after being drivin?

 

I noticed it last night. I was driving around for an hour or two. I went home and parked it, started it a few hours later and it idled lean right away. This morning it was okay for a minute but it didnt take to long to go to lean.

 

hows the idle

 

alittle rough but not erratic, it was nice and smooth a day ago.

 

if you didnt change anything between (safc settings etc) then its something near your tb, vfaq.com has lots of info for fixing idle problems, and just about every dsm suffers from them sooner or later.

 

if it idles normal when cold, but crappy when warmed up, id point toward the iac motor in your tb, you could adust the BIS screw and see if it helps at all.

 

BOV is recirc right? my wideband reads around 14.8 at idle when warmed up

 

yep, I recirc. My wideband reads 14.8 as soon as I start it up, but soon goes to lean pretty quickly. I'll going to check out vfaq.com