well im going to side exhaust soon so rear tips would be a waste of money. and ill swap bumpers with a sixer then no worrys about the cutouts i know somebody on this site would swap.

 

Like I said, I don't notice anything, even with cams + LTs + o/r X/ turndowns and a supercharger making it even more rich.

You catch a whiff every once in a while if the wind is blowing right, but it shouldn't be coming up into the car from underneath. Make sure the pipes are exiting past the axle or at least really close to it and have a pronouced angle down.

 

do you have picture of what yours look like?

 

Tailpipes are useless weight and restriction.....although mine are installed at this time