Running no cat-back???
You're not hurting anything at all. You just have an exhaust with no muffler to restrict it..
There would be a slight chance of that if you were running open headers, but not from just removing your catback.
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i had mine off at the auto fair they had out here, i was only bolt ons then but man it was awesome, i just felt like i had 100 more hp lol
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