New Truck - 05 GMC Sierra 2500
#11
#15
Thanks, I just put a magnaflow cat back for now but I would like to get a set of 243 heads and a TBSS intake next year and see what that does for the LQ4. As for the trans, I'm planning to do a trans-go HD kit and leave it alone.
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Suburban2500
INTERNAL ENGINE MODIFICATIONS
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07-19-2015 05:50 PM