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Originally Posted by crzhrse
They arn't worth the hassle or the money. If you just want headers to say you have headers then go for it. Aftermarkets don't outflow the stock by enough to neccesitate a change on anything less then a full blown drag car. Spend your money on something else if you really want your money to work for you.
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Shorties are not worth anything(maybe 1~3rwhp).But longtubes have PROVEN gains of 13+ rwhp gains.
You have no clue on what makes power on a 4.6,if you say stock manifolds are just as good as headers.
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621rwhp~504rwtq <----Old vortech T trim combo
2V 2.2 Kenne bell <---present combo
549rwhp~491rwtq SAE @15psi
560rwhp~490rwtq STD @15psi
My mods