[newguywithaZ]

i don't know which kind I should get. Please give advice.

 

[WillieBoy240Z]

Actually, you've got a lot from which to choose. If you want performance, there are a number of alternatives ranging from $100 - $300+ in Flowmaster, Borla, and several other brands. If you just want a cheap replacement, your closest autoparts or muffler shop can provide help.

If you need to replace your entire exhaust system, most people here would recommend that you install a 2-1/2 inch pipe. There are any number of mufflers/tips you can put on. There are differences in the way they sound, and how they perform.

Hopefully, others here can give you some specific models for your z.

Good luck

 

[zx-ae]

Since you have a turbo motor you need the highest flowing muffler with the least amount of back pressure you can find. Back pressure is good for an NA motor but its not so good for a turbo.

So you need a muffler with a straight through design, like a dynomax ultra flow.

 

[greydog]

I have a Dynomax ultra flow with a 2 1/2" cat back pipe on my car. I'm pleased with it overall but I suspect I may wish for a 3" system as I begin to increase boost.
Dan

 

[New2Zs]

Is it better have a smaller pipe on N/A? Or would a 2 1/2 still be effective for N/A?