Hey guys, I got a 02 silverado with 4.8. I was wondering if lpp longtubes with 3 inch ory pipe to a 3 inch borla pro xs with stock tail piping which is 2 3/4inch. Is that too much or will I just be making noise with no go?

 

Also going catless

 

If you keep it stock it might be too much. Add a cam and a better intake then maybe.

 

Intake as in cold air or intake manifold?

 

Both lol

 

You'll probably be making noise with no go, regardless. Go ahead and do it bigger, then just deal with the marginal loss until you get more mods. That way you don't have to do it twice.

 

The difference in flow of a 3" to 2 7/8" isnt worth measuring.
Go for it!!

Last time i measured a stock tailpipe it was 2 7/8" not 2 3/4". Not that even 1/4" diff would matter if yours is that.

 

Just do it, leaves plenty of room to grow later

 

Think of it as trying to blow though a fire hose compared to a garden hose, if you have plans for further bigger plans,get the big stuff and sleep easy.

 

Yeah just do it.. get a tune with the lts and go from there. No since in being stock