E46Fanatics - View Single Post - RRT Racing : An Active (Autowerke) Approach To 425+ Horsepower In A 328Ci
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Old 05-21-2013, 05:43 PM   #30
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Join Date: Oct 2008
Location: Malibu
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My Ride: E60 M5 & 335i ST
Originally Posted by BobbyC View Post
Oops, my bad. You mentioned AFR's being 12,13,14 across the board. Please tell me that was NOT under boost. Assuming that your fuel system is up to par, I would start with one, maybe two steps colder on the plugs and gap them down. If 93 is available in your area, see if you can tune it safely w/out meth. 11.5 is as high as I would like to see on a street car for afr's, tuned safely.
11.5 afr is running rather rich. 14.7 is ideal and perfect. His numbers are fine and afr bounces all over the place when idle, pressing the gas slightly or slamming the gas. When in full open throttle if it reads to about 14 that's perfect. I do agree he should get some colder plugs though to see if it resolves the misfire issue.
BMW 2007 335i - ST 6266
Audi S4 2000 Stage 3 - Dat turbo spool - SOLD
BMW 2000 3-series - Supercharged Because race car SOLD
Maserati 2004 M128 GT - HREs/tint/straight piped SOLD
BMW 2006 M3 - stock - SOLD

Last edited by MalibuMafiaV; 05-21-2013 at 05:44 PM.
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