I have a 2.5in. cutout----> 2.5 in. universal fit catco ----> 2.75 I-pipe and stock muffler off a lt1.
Sounds freaking sweet alot better then my flowmaster did, when it is capped. Soooooooo.... much quieter and liveable then my last setup but about as loud as my flowmaster.
My cutout is working as planned.... with it capped my car does go slower then it did with my old setup but with cutout open it runs slow do to lack of backpressure.... exaclty what I wanted it to do I am going to make different types of block off plates for drag race or auto cross setups and run clsoed cutou for the street.
I was worried about messing with my exhaust and making my car slwoer(the whol why mess up a good thing) but now I am happy since I cna better fine tune it to how I want the backpressure to work.
Sounds freaking sweet alot better then my flowmaster did, when it is capped. Soooooooo.... much quieter and liveable then my last setup but about as loud as my flowmaster.
My cutout is working as planned.... with it capped my car does go slower then it did with my old setup but with cutout open it runs slow do to lack of backpressure.... exaclty what I wanted it to do I am going to make different types of block off plates for drag race or auto cross setups and run clsoed cutou for the street.
I was worried about messing with my exhaust and making my car slwoer(the whol why mess up a good thing) but now I am happy since I cna better fine tune it to how I want the backpressure to work.
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