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Power Strokes
6.4 Aftermarket
Exhaust Back Pressure
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[QUOTE="bigrpowr, post: 83526, member: 806"] actually im pretty much in agreeance, but the fact is, add a bunch of bp to high cp and bang! you take a combo that has a bunch of timing and high cp, but hasnt blown a hg, its proven to last for 150-200 passes. then add more bp and bang, the hg goes, it seems quite obvious. thats what happened to me with my 7.3. i had a single that made 48-50psi boost and 60-61 bp..... then on nitrous it made 56 or so psi of boost and 68-70 bp ..... motor made 750 horse for 2 years straight, kicked ass without a blink. went to twins and the bp was high, we added a gate but it wasnt enough i guess. it was about 75psi boost and 90+ bp... on a gauge, hg's let go the first day out. in the diesel world , i was learned a long time ago from diesel folks smarter than me that bp could contribute to cp's. i dont think bp is DIRECTLY to blame, but when your $hit is turned way up, its just adding to a problem already presnt. btw this was with h-11 studs. as far as i know backpressure and drive pressure are one in the same. [/QUOTE]
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