Crazy AFR's LEan on low end--hella rich on top

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Aug 11, 2007 | 12:04 PM

junito1

Thread Starter

F**K THE SYSTEM!!

Joined: Sep 2006

Posts: 2,591

Likes: 1

From: Florida

Crazy AFR's LEan on low end--hella rich on top

Ok. Ill give you guys an idea of my mods.

I have a BNR stage 4. at 7-8 psi only.
550 primaries and 720 seconds with aeromotive FPR.
I have a stock ECU.

Ok we hooked up my bros innovative wideband and the results were a bit a strange.

AT idle im getting 14.0 +- afr's

Aug 11, 2007 | 12:23 PM

HAILERS

HAILERS

Joined: May 2001

Posts: 20,563

Likes: 27

From: FORT WORTH, TEXAS,USA

The only time I would consider 14's at idle a normal thing, is if the car still had the airpump and ACV. Acv feeds air.........to the exaust port which are prior to the 02 sensor, therefore lean at idle. At full throttle the acv would not be sending air to the acv but dumping it overboard thru the silencer in the right fender.

Probably not your case, but if you do have the acv and airpump, that would be the reason.