I'm considering adding one to my car. I actually have a couple questions.
Hp depending on the brand they claim different ones normally around 5-10...but thats hp not rwhp=rear wheel horse power. By the time it gets there its not noticable. Its a good upgrade if you plan on adding any forced induction later on. Sound wise you will probly hear where its sucking in more air. And yes it does improve gas mileage not by much maybe 2 mpg. Ive heard different claims on this me personally i got none that i could really notice everytime. Good luck let me know how it goes.
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