muffler question

[Tahoe803]

I've got an 07 tahoe LT 5.3. I'm wanting to replace the factory muffler with an aftermarket one. Either flowmaster or magnaflow. I need to order one with 2 3/4 piping correct?
Also do I need to get one that's center to center? An offset one? I called the muffler shop and they weren't any help. He didn't know what size or anything to get and told me to check online.

Thanks for any info!

 

[Goodinblack]

Plenty of threads already on this. Great reading too.

You have 2.75 inch pipes. A good exhaust shop can put in a 2.5 inch or a 3 inch muffler.

Look under your truck, should be a Center In and a Offset out.

If Magnaflow then, 12586 or 12589 should be good.

 

[Tahoe803]

Thanks a lot. I did some reading but still wasn't sure what exhaust size to get. Some were saying 3 and some 2 3/4. I'll probably just look for a 2 3/4 and hopefully the shop can make it work.

 

[Goodinblack]

Problem is you won't find a 2.75 inch aftermarket muffler.

The only one that is 2.75 inches is the Borla GMPP muffler. The problem is that it is NOT Center/Offset. It is Center/Center.

If I were you I would get a Center/Offset in a 2.5 inch pipe, have them flare out the ends .25 inches and weld it in.

 

[tx tahoe z71]

I am running a 3" Magnaflow, 22" case, and it fit stock piping fine. I would go with a 3" over choking it down to a 2.5".

 

[Tahoe803]

Yep just noticed there is no 2.75. I'll order a 3inch muffler. Thanks for all the help! Now I just can't decide which muffler to get

 

[Gzes]

Have you thouh of cherry bomb? I have both flows and magnas. I like em both

 

[Goodinblack]

2.5 or a 3 inch would work though.

A 2.5 is not all that bad for restriction. A Magnaflow in 2.5 inch straight through design outflows a stock 3 inch muffler with baffles.

A car needs some exhaust backpressure so you don't lose too much of your low end.

 

[Tahoe803]

i just ordered the 3" flowmaster super 40. can't wait to get it on. thanks for all the help!

 

[Goodinblack]

Cool.

It may drone bad though. Let us know how you like it.