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Old 10-13-2012, 11:49 AM   #142
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Join Date: Jul 2007
Location: Milton
Posts: 2,913
Originally Posted by BMe30 View Post
So i did that dyno day today... So from that first dyno pull to todays i was messing around with some tunes and this is what i got with a failing fuel pump..

Ill go back once my new tre-340 fuel pump goes in

Holy lean, get a proper reading and tune that way. Considering a M42 has no way to detect knock I'd be very worried.

Your cylinder temps are probably insanely high, that's how I blew my M42.
85 325 - Turbo M52B28.
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