[csayad]

What size pipe should I use to do a resonator delete? I've heard there's secondary cats as well but I'm thinking abt just removing the resonators. Lmk!

[mattburks]

Your muffler shop should be able to match up the diameter rather easily without much added thought. I believe it’s 2.75-3” but it’s been a non topic as the shop should have competence to match. Just let them know your intent of either single or dual res removal, and if you plan to introduce an X or H cross over the cells to even out some of the rasp — you’re going to love it.

[csayad]

Originally Posted by mattburks

Your muffler shop should be able to match up the diameter rather easily without much added thought. I believe it's 2.75-3" but it's been a non topic as the shop should have competence to match. Just let them know your intent of either single or dual res removal, and if you plan to introduce an X or H cross over the cells to even out some of the rasp — you're going to love it.

Originally Posted by mattburks

Your muffler shop should be able to match up the diameter rather easily without much added thought. I believe it's 2.75-3" but it's been a non topic as the shop should have competence to match. Just let them know your intent of either single or dual res removal, and if you plan to introduce an X or H cross over the cells to even out some of the rasp — you're going to love it.

Have you done it? How much would it be to do an x pipe or h pipe?

[mattburks]

Yessir- I’ve ran a dual resonator delete with resonator #2 furthest back being replaced by a pre fab'd x pipe the shop had on site. I ran it this way for roughly a month and went back and replaced my secondary cats with straight pipe. The car is still very modest. All in all this cost me right at $500 for both trips. Be he said if I would of done all at once closer to $350-400.

My .02 cents, it sounds great. If you hate it, go buy a mid pipe then. You’ll be out less than $500 I. A worst case scenario. Not to mention we are just a couple months out when mid pipe sections will be a dime a dozen on the for sale by owner board if you want to go back stock.

If you havent already- Check out trentmeisters thread ”mid pipe…” a bunch of folks have chimed in on this topic as well.

[M0J0]

There is an entire thread on this subject.

[mattburks]

Originally Posted by M0J0

There is an entire thread on this subject.

M0J0
I referenced as well- hope he found it! I remember back in April/May when we were all settling into our cars and hacking up the exhausts. Still happy with mine months later.

[McLaren720s]

Stock piping is 3" so I would keep that although 2.75" wouldn't make a difference either.
I paid $400 to delete the resonators and replace with X-Pipe. Made a very significant difference in sound volume and I would recommend it to anyone.