Stock 2.5" Exhaust restrictions
#1
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right now I have a 1 3/8" LT's, O/R Y pipe and a stock catback with a magnaflow muffler and a 2.5" DMH electric cutout. My question is, will i see any noticible gains if i switch to a 3" catback with a 3" cutout? I'm looking down the road as well and dont want to be restricting a H/C/I package making 450+whp. Thoughts?