aem uego reading lean

[jrocstar]

well i have connected everything and eliminated exhaust leaks and my wideband is measuring lean at idle when the cam is loping. if i put it at 2000 rpm it runs between 13.9-15.7 afr it jumps alot and i can't figure out why. held at a steady rpm it shouldn't have any problems with the afr.

[Bird_Of_Prey]

Re: aem uego reading lean

You need to have the engine loaded to correctly calculate A/F. Revving in neutral isn't doing anything for you.

[jrocstar]

Re: aem uego reading lean

just tried to get baseline. we got it figured out. one of the vacuum lines goin g to the map sensor was cracked causing a leak. shows correct now.

[Bird_Of_Prey]

Re: aem uego reading lean

Are you measuring with load now?

[jrocstar]

Re: aem uego reading lean

both. i was measuring at idle to try to get an idea how much fuel was going in to it. this being a completely custom set up if i have lean at idle i sure as hell will have worse under load. we tested everthing now it runs real rich so we are throwing a new tune in it to see if we can't get it back around 12:1 or so. i know idle reading doesn't mean **** or revving it. but i also don't like holes in my pistons and i don't think my engine does either :0)