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I'm looking for some street legal headers, X,H-pipe, Mufflers that would add the most horsepower.

As far as my tuner goes (Realspeed) the data on SC cars Gain very little for headers vs the all mighty dollar, American Racing long tube with x pipe, high flow cats and borla stingers gained 6 HP and 8 RWTQ. JBA system on SC car 2 hp, Kooks with off road -2 hp. and it goes on and on.


These numbers are from 197 cars and done on a Mustang Dyno (MD). Hope this helps, oh yea but the car sounds good!!

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