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i'm personally buying the k&n as soon as my incom tax comes in.... they show the actual HP gain youll get, are easy to put in, are designed well, and have a good rep
injen seems to be good but i'm not familiar with the type of filter they use or how easy installation would be; weapon R..... u get what u pay for.... may have fitment issues and the foam filter is junk
i was thinking about that throttle body spacer as well, but i cant justify spending $75 on a dinky piece of metal with some bolts and that isn't proven to increase power
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