Im having a funky little problem with idle AFR and not sure if its a slow or lazy 02 or something else.Daily i will come to a stop and the car will bounce from 14.5 to 15.7 at idle then all of a sudden go to 12.5.Wide open AFR and cruise are still dead on but at idle this problem shows its ugly head.I don't log unfortunately but was wondering if anyone else has had this problem.Thanks for any input beforehand

 

Check for vac leaks first.

 

No vac leaks and im getting stumped

 

What brand is it? If it is an AEM UEGO gauge setup, they are notorious for doing that. I had one of their WiFi modules that I used for tuning because it was always dead on. I used it just for tuning, then would switch connections back to my UEGO gauge for daily driving, all while using the same O2 sensor.

 

Both my boost and AFR are aem digital and have been in the car for less than a year.Purchased brand new.I also made sure to check the wiring

 

I would not worry about it. As long as it's working correctly at WOT, don't worry about idling.

 

Great advice, if your car idles like **** who cares. Lol. A lot more is needed to know about your mods to start speculating the cause. Does the idle stumble when it does this? Does the engine "surge" at all when it does this? Or does it just swing rich for a second and you can't feel any change in the engine at all? I wouldn't say don't worry about it though. It's obviously not supposed to do that. Cursed are the ones that embrace ignorance.

 

^This

My UEGO 52mm gauges seem to get a bit kooky, especially once they get hot or have been cooking in the sun all day.

 

GSC s2 cams on stock 10.5 turbo(gsc titanium springs and retainers)
muse 02 dump
walbro fuel pump
buschur bullet TBE
stock injectors
ets licp and stock uicp
3inch ets intercooler
hallmann mbc
omni 4bar map on ets SD intake
-knN filter

Car is tuned and makes 371/368tq and it doesn't idle like **** just noticed it swinging to rich at a light and thought something could be wrong.No surging and plugs have been changed recently and gapped correctly

 

Where did he state that his car idles like ****?

 

Any other ideas?

 

Anyone have any other ideas for me?