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i know this very, very well. (archive)

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Posted by coky on August 01, 2001 at 09:06:38:

In Reply to: ATTN: Supercharged M's, a little help please(m) posted by Skip on August 01, 2001 at 09:00:49:

it's a fact of life.

it's true. the car stumbles and mumbles and generally complains for the first 5 minutes and the idle goes nuts. the supercharger running off the engine exacerbates the rough idle caused by the hot cams the M motors run. not to mention all of that OBD2 crap and minimizing emissions and god knows if the engine is running too rich to burn off stuff and to preheat the catalytic.

anyway, my tuner tried new spark plugs (hotter, i suppose?) and they made a minimal difference. i think this generally is one of those after-OEM problems.

sorry i am of no help whatsoever, huh? my friends just laugh at me because the car is so herkyjerky and it almost stalls and they just wonder what the hell i've gotten myself into. and then it warms up and they're pinned into their seats....




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