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[brainycheddar]

I also have a 15% pulley and an induction kit, but do you really think that roughly 10% of your car's power will be lost by adding a few extra bends in the exhaust?

The biggest difference I think you'll maybe notice is difference in weight, which will net you 10 or so pounds, and since each 10 pounds added to a car is equivelant to taking away 1 hp, I don't think you'll notice much difference. unlike the days of yore, modern cars arre designed to be more fuel efficient, as opposed to cost efficient to produce. So where as a car in the 60's or 70's would have a cast iron exhaust manifold log leading to a muffler with more kinds and baffles than you could car about, modern cars are more and more often equiped with a tubular exhaust manifold and into a better researched exhaust system. my 83 mercedes 500sl averaged 10-ish MPG, now cars similarly engined cars are doubling that.

in short, if you have the stock rear bumper, and are sick of the sound, I'd go for it.
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