Thread: IM240 test
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Old 08-01-2010, 04:04 AM
NASSTY NASSTY is offline
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Cobra Make, Engine: RCM, 4 wheels, two doors
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As I broadly understand it, NOx is mainly affected by timing.

CO and CO2 is more a fueling issue.

Mando, is your set up running closed loop? If not, unabling closed loop should fix alot of your tuning issues as the ECU will trim up your A/F ratios to 14.7:1 which is what your cats need to work properly. I assume you're using aftermarket EFI.
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