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yellow69z28rs · 12-04-2012, 09:54 PM

[Stock 500rwhp, 8.6 metco pulley ( no tune) 552rwhp]

Is this the only mod you did to p/up 52 HP? No tune?
Did you dyno before and after?

12-04-2012, 09:54 PM	#6
yellow69z28rs Drives: 2013 ZL1 Convertible Black Join Date: Nov 2012 Location: Alexandria La. Posts: 364	[Stock 500rwhp, 8.6 metco pulley ( no tune) 552rwhp] Is this the only mod you did to p/up 52 HP? No tune? Did you dyno before and after? __________________ JRE 750 HP package Rag Top Rob