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Originally Posted by Jake Raby
Over time I have tested most every exhaust system on most every size engine. I have yet to be impressed, either on the dyno or on the street.
I have seen a 3K exhaust system cost an engine 20HP, or a set of cheap headers add 2HP to another. I have yet to see the gains that make the drone at cruise speeds or the cost worth it.
This year ALL of my updated engines were fitted with OE mufflers, I carried out the development for my engine program and apply what works.
If you like sound, go for it. If you want less weight, go for it.. If you want HP, reconsider.
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Jake is correct . Its all about the sound and the benefit of weight reduction when it comes to an aftermarket cat back exhaust. Under the best of circumstances, one might see a slight bump in hp. However, claims of a 10-20 hp increase on the part of some manufactures is extremely unrealistic .