Quote:
Originally Posted by M3 Montreal
Many NA M3's are getting 400whp with tune set to no cats, pulley, full catless exhaust and air filter.
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I have not yet seen "many" such dynos. I have seen only one -- as I recall it was 408 rwhp, by OE Tuning, and not on a dynojet. I believe there are no such dynos included in the "dyno database."