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Old 02-21-2013, 06:43 PM   #31
Blown355
 
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Drives: 2012 ZL1 Black M6
Join Date: Sep 2009
Location: Austin TX
Posts: 715
Quote:
Originally Posted by Jason 98 TA View Post
Good questions for sure. I haven't seen anyone try a pulley swap without tuning. Maybe someone here will jump in with experience trying that. The lower pulley is easier to do than a upper & can be returned back to stock very very easily. 93 octane is always important with a boost car no doubt!

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2012 ZL1 #1092
Black on Black
10 spoke
M6
ECF

Mods: 9.55 lower pulley, Kooks LT w/cats, FIC850's, hx, CAI
"Race" Tune - 645rwhp/635rwtq
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