I am puzzled. I just started driving the car more and more. Shes been a garage bitch for the last year or so. Anyway. I am getting low A/F readings. I have a useless blinky light gauge and my blue wire on my safc hooked up. Anyway, I have noticed lately that I am lean (.1xx through .79x) at idle. Now I don't remember what I was at last year. However, I have installed a 57mm TB, Ported and polished upper and lower mani with CAI and header/cat/catback exhaust. Is it possible that I am getting that much more air with the TB and mani?? Or do you think the SAFC is putting too much load on the O2 Sensor?? I may unplug the blue wire and see if it makes a diff, I thought I'd bounce it off you guys first..Lates

at idle, it should cycle between .2 and .8 volts

sounds to me like you're fine brutha

Brilliant! I searched and couldn't locate idle voltage. Thanks my man!!

Originally posted by jdpilot
Brilliant! I searched and couldn't locate idle voltage. Thanks my man!!

yea no worries

a better way to see whats going on is to get in there and datalog the stock ecu, the fuel trims will tell you a lot

A/F ratio at idle is mostly unimportant. The engine isn't under enough load to knock, and if it does knock, who cares? It's at idle!

Originally posted by Ducking_Fumbass
A/F ratio at idle is mostly unimportant. The engine isn't under enough load to knock, and if it does knock, who cares? It's at idle!

If your engine knocks at idle then you probably have a bigger problem than just fuel maps!

Originally posted by Keith2172
If your engine knocks at idle then you probably have a bigger problem than just fuel maps!

or you have some sexy forged slugs and theyre warming up }(

I wouldn't call that 'knock' per se, though...