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Old 05-14-2013, 02:43 PM   #2
Bayou City Muscle Cars
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Drives: 2013 2SS Dusk Edition
Join Date: Jan 2013
Location: Houston Texas
Posts: 1,442
Kooks is the only one that offers a LT/Cat package that supposedly does not require a tune due to the "green" option cats. otherwise it will pop a O2 sensor code sooner or later.

without a tune though you wont get the full benefit of the upgrade though.
2013 2SS Dusk Edition
Lethal Racing Stage V
PER 418ci Forged LS3
530/520 SAE
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