It depends on many factors, including price, gains, weight, sound, etc. Check out the intake/exhaust section here and read what people have to say about theirs.
What are you looking for? There are some really expensive ones out there and some that you can find really cheap. It all depends on what you want.
Basically, it comes down to resonated and non-resonated. Non-resonated are much cheaper but can have a bit of rasp to them at times. Personally, I like the way they make the exhaust a little bit louder and that's what I'm going with.
i would buy the helix ones. i had the topspeed ones from ebay and although the fittment was perfect and they looked great they made a raspy sound at high rpm. now my friend has them and it sounds the same on his car. :banghead:
Im probably gonna get the helix as in there fairly cheap I cant wait to get em i dont really care if my exhaust gets a little louder i have the greddy so its fairly quiet
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