Quote:
Originally Posted by maro
is this really true?? i see z1 sillicon maf hose for 108 dollars on z1 website,,,will this piece work like u said gaining 9 or more hp?? by the way im debating to get motordyne e370 shockwave exhaust also !
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With a k&n filter or comparable high performance replacement filter? YES. With the stock filter its about a 5hp increase.