Quote:
Originally Posted by travisjb
pros - more hp, possible faster rev climb (not sure this is confirmed)
cons - none we know of except potential dispute with nissan next time you bring it in for warranty... or extra work to swap back before you bring in for warranty
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One other con that should be mentioned - you won't get as much current to your battery through the alternator (underdrive means lower belt speed). This is probably only an issue if you have a high-current audio system. I assume the lower speed to the power steering pump doesn't make any difference...