DSM AFC Woes

122 Vega

Retired MSP Racer!
:
03 Mazdaspeed Protege #1668,2005 Mini Cooper S, 75 Cosworth Vega
I finally got mine in, CEL Lean Idle immediately. Reset PCM Reloaded Supermap

150 Miles, CEL Lean Idle Reset PCM

Installed AEM WB - Idles between 16.5 and over 17!
Normal cruising in 20mmhg vaccuum - 14.7
Any boost above 2psi - richer than 9.0, goes off the scale rich!

Reloaded Supermap - CEL again.

Datalogging - AFC only pulls .25-.75 volts up to stock boost, no changes at idle at all.

Cleaned O2 sensor, checked all connections, cleared AFC and reloaded Supermap. no change.

no detectable vac leaks, although I did not tap off my master brake booster line - is it 3/8 inch ID?

Time to schedule some dyno time, but then will it only be tuned to full throttle loads?

the car feels much better in the midrange before boost, and just getting on boost, but it isn't supposed to, and isn't indicating that it is changing anything there.

Ideas why my car would be so retarded compared to all the other stock MSPs with the AFC?

Britt
 
Are you sure it's installed correctly? You have to manually wire the AFC, right (no harness)? I'd check all your connections first.
 
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