Quote:
Originally Posted by SupportGeek
I was talking with a GM Performance specialist at an event last weekend and he said that the ARH shorties give about 14-16hp gain with no tune required, not substantial, but thats 3.5-4%, better than a kick in the head IMO.
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No offense Bro. but I would need to see the before & after Dyno #'s to believe any CARB approved Shorty produced hp increase.
