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just got the car dynoed again and put down 375hp and 372 tq
stock i put down 351hp and 349tq only mods are vararam with TB spacer, cory harris ported intake manifold, i ported and polished my own TB, and i straight piped the cats. and i havn't tuned it yet but i think a 25hp increase isn't to bad for only spending $600. yes i still have stock exhaust manifolds and mufflers.
That's great. You're probably looking at around 395 rwhp with headers. I wouldn't do the catback, save you money. I just installed the Melrose with no catback, not loud but sounds crisp. Next in line is the ported intake/TB and tune.