Geodriller
Full Access Member
No, as stated when I made 502 rwhp with the ported intake, I had full length headers, race cats and a Magnaflow muffler, I also had a stock non-ported throttle body. The gain of 36 hp was with the BBK and custom exhaust (catless) but I still had the same headers. As a side note, in 2004 when the truck was pure stock it made 415 hp and 433 ftlbs on a regular chassis dyno.You can do a search in the Performance section for results with the ported intake and another results with the BBK (before custom exhaust). The ported intake results are at DC performance on the dynaPac (includes video) and the BBK results were at the BBK facility on a regular chassis dyno, but before and after results are reported. The ported intake went on first.
yeah, i remember reading that, i also remember people stating that was a great gain for those mods.