So i'm ready to have a custom exhaust made for my 2011 Infiniti G37x coupe. I want it as loud as possible but i want it to to sound clean and none ricey, anybody have any ideas on what ill need or how to do any of it?

 

Hmm, that's a tough one. I would say for volume, you'll want it as straight and large as possible and probably straight through mufflers. Most go with 2.5" piping. The bad part is if you don't install some sort of resonators, it will super raspy but it also quiets the sound, so you'll have to decide what you really want more. To me, the perfect exhaust would be high flow cats to a set of resonators to an X pipe, then back to dual 2.5" piping to 2 more 12" resonators bolted to a set of Manzo/Top Speed beveled mufflers. It would be plenty loud and sound amazing...

 

I wanted 2.5 inch piping and want to make it true dual, i already have manzo axle backs but i dont think they are 2.5

 

Well you're on the right track then, but from what I have seen if you don't at least put in an X/H pipe, true dual will end up sounding raspy. just depends. OR, you can be different and rich and try true dual titanium all the way back

 

Which one do you prefer? Should i go with no mufflers?

 

X pipe is far better than H. I would absolutely keep your mufflers, they look and sound great. If that's not loud enough you can always order some straight pipes from Top Speed.

Infiniti Products - Top Speed Pro 1 Performance

 

Theyre muffler deletes? I like the sound of my manzo i just want it louder

 

Like I said, I'd keep the mufflers too but they are designed to quiet the exhaust so you'll have to decide which is better for your liking. Cant have your cake and eat it too

Next best thing is to start removing resonators but you WILL get rasp.

 

I think ill keep the resonators, my car has 2 can i remove one?

 

You have 2 because its a V motor. If you remove just one your car will sound retarded and flow uneven, not a good idea at all.

 

Get some smaller resonators. the oem sedan's are 18" long.Not sure how long the coupe ones are. I bought some 12" vibrant resonators for my sedan and it made a big difference in sound. not raspy at all.

 

I just got a muffler delete today with Nismo 4.5 inch exhaust tips, with IPL Y pipe. And it's very loud lol. I wasn't expecting it to be as loud as they are now. A lot of heads turn though because of it.

 

Got any pics or sound clips ?

 

Will try to get a sound clip tomorrow, my neighbors will be mad if I did it right now lol.

 

For the Xpipe you can use the Magnaflow resonated X, that would accomplish true dual and some rasp elimination.
https://www.magnaflow.com/products?partNumber=12468
https://www.summitracing.com/parts/m...I9URoCE47w_wcB