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Old 09-06-2011, 12:09 PM   #1
6th Gear Member
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Join Date: Apr 2010
Location: Ottawa, ON
Posts: 1,201
HELP: Car runs lean at WOT

Hey guys,

So at CMP yesterday my car was running lean at WOT.

Barrie came up and we added more fuel in the map and it was fine for around 20min, and then it would start to lean out again. we disconnected the battery, and then the same symptoms - fine for a while and then it would go lean.

Anyone seen this before? My innovate LC-1 AFR gauge would go back to calibration mode (would just flash like i had turned it on the first time) several times on track once it would start going lean again - but never when it was running fine.

I'm thinking it something electrical, but any help would be appreciated.
1992 BMW 325i (CHUMPCAR #296 - Metric Homes Racing)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)

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