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mark_p · 08-22-2009, 10:56 PM

I have to agree. You get very little if any out of them. I have dynoed with no belt at all and only picked up like 4 hp. So I know an underdrive could only give you like 2hp or so. that is not worth the potential negatives or even an install to me.

08-22-2009, 10:56 PM	#8
mark_p Drives: 2010 2SSRS m6 Join Date: Jul 2009 Location: Memphis ntn Posts: 225	I have to agree. You get very little if any out of them. I have dynoed with no belt at all and only picked up like 4 hp. So I know an underdrive could only give you like 2hp or so. that is not worth the potential negatives or even an install to me.