I want to up grade the exhaust so my 03 lb7 so it can "breath" easier. I'm trying to save money so could I just cut off the muffler and put on a down pipe. What will I gain by buying a Magnaflow 4" Downpipe-Back Aluminized Pro Series Exhaust BTW I do now want a loud exhaust will the straight pipe be any louder than the magnaflow?
Cutting off the Muffler vs Magnaflow kit
- Thread starter farmer/hunter
- Start date
Well straight pipe is about a loud as it can get and keeping it quiet with a muffler is going to cost you a little more. Pick your poison. I suppose you might be able to find a better flowing offest 4" muffler and neck it up to the muffler inlet/outlet, but at that point you're probably close to the price of a cheap 4" exhaust.
You can buy a 3.5" muffler delete pipe on ebay for about $50 if you don't mind the noise.
You can buy a 3.5" muffler delete pipe on ebay for about $50 if you don't mind the noise.
Mines straightpiped its loud and has a mean sound but I also have the mbrp downpipe as well and it makes it little deeper. You could get an 4 inch back exhaust with no muffler and itll sound alot better than a straight pipe. Just straight pipe it. Its cheap as hell and if you dont like it get the full exhaust. Cause sometimes straight piped can have an odd sound. I like mine with the downpipe otherwise i would of bought the full 4 inch no muffler exhaust. Hope this helps you decide.
I agree, it just sounds obnoxious without any muffler. I'd dump it out the back without one. If you want to make a performance difference, get a new downpipe.