A cat-back, mandrel bent exhaust will flow better than your stock crush bent piping with some generice muffler on the end of it. Yes, you can get custom mandrel bent piping from the cat back to a universal muffler, and it would be comparable to a complete cat-back exhaust.

 

what is a mandrel bent , and crash bent?

 

mandrel bent- The tubing stays the same diameter when it bends. It is a smother flow for the exhaust gasses

crush bent- The diameter is slightly decreased where it bends because the it is crush bent(hence the name). Stock exhaust are usually crush bent, its cheaper and easier to make

those are the differences that i know, other people might be able to explain it better

ronin

 

Mandrel bending preserves the round diameter of the piping thru the bend so as to not cut down on flow. Crush bending causes the bent areas of the piping to collapse a little, deforming the once round diameter into more of an oval. Every one of the crushed bends will restrict flow, and the more bends you have, the more flow is restricted.

 

so, does catback include the cat too? or is it just everything beyond the cat?

thx!!

 

No, hence the term cat-back