Hessitation after H/C swap?
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Join Date: May 2006
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Hessitation after H/C swap?
Im just wondering if an off idle stumble is normal for an UNTUNED H/C swap? i just want to make sure so i know its nothing that i did thats wrong with it. it was very responcive when the motor was stock. now it hessitates off idle, almost a bog. the cam is 231/237 SI5 cam and patriot heads.
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I got same cam 231/237 .589/.595 112+4 on my m6. did same thing. would stumble when I got to a stop light or sign. that size of cam u definettly need a tune. my base dyno was @ 312 rwhp. w/ heads (PP) and cam swap before dyno tune was @ 354 rwhp and rich. after dyno tune she finally topped @ 418rwhp/389rwtq. I'm happy
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