what should af be at idle

[bcowie]

30-4100

[ftjandra]

30-4100

I took a quick glance at the manual and there seems to be a setting (P4) that simulates a narrowband (0-1V). But, the manual wasn't clear on whether that setting would display AFR or lambda on the actual gauge. Give it a try and see what happens.

--Ferdi

[bcowie]

Thanks, I may have an idea on my other problem as well, I used silicone (rtv black) as a TB gasket and it doens't look like it ever vulcanized

[jeff21]

I took a quick glance at the manual and there seems to be a setting (P4) that simulates a narrowband (0-1V). But, the manual wasn't clear on whether that setting would display AFR or lambda on the actual gauge. Give it a try and see what happens.

--Ferdi

that is right. On the back of the gauge, turn it into position P4 and the output will be 0-1V. the gauge will still display AFR.

[bcowie]

Nice, too bad its not labelled on the back.

[swalltr207jg]

your afr at idle, after the engine is warm, should be around the 14, unless u have huge cams, porting, larger throttle body, or an electrical prob, your just wasting fuel idling at a richer afr......the gtx stock bp26 ecu idles at around the 14's if I remember correctly from my wideband, while warming up it was around 10-12. It sounds like you might have a wideband issue though more likely

[khrys771]

i aim for 16.5:1 in my lsvtec turbo at idle, and 14.7:1 cruising out of boost.