Does anyone know if you replace the OEM muffler if you will get a louder sound from the exhaust? I really want to make the exhaust louder, but I can't justify spending a lot of money on getting a whole new exhaust. Any thoughts?

 

Maybe going with HFC may be a better option? You'll definitely get a slight performance gain from that mod as well.

 

What is HFC? Sorry I'm still new to modding and don't know much about it.

 

High Flow Cats

 

You could just get the 'sport muffler' directly from Infiniti (made by Nismo I believe)...don't have to worry about any weird tune issues. It's about the same sound at idle, but under heavy acceleration it's a bit throatier/deeper/louder...without any extra drone.

2013 G37 Specifications and Options | Infiniti USA Official Site

 

Its a good idea and I would do it, but for $789? I could just spend the extra few hundred and get a dual exhaust system from Stillen.

 

You're welcome to do that, but again...there will be performance changes. Most likely, you will lose a little low-end torque. That seems to be the general consensus with the catback systems here. You originally posted you wanted a louder muffler...didn't mention wanting to spend more money on a full exhaust. I'm sure you can haggle the price or find a gently used one somewhere.

 

Yeah, I'm looking for more of a louder exhaust than performance, eventually I want to do more performance oriented, but right now I'm just looking for sound enhancement with out spending a ton of money

 

topseed exhaust is cheap and sounds pretty good

 

Do you have coupe or sedan?

 

I have the Sedan

 

you can remove the resonators and replace them with vibrant resonators. summit racing has them for $47 each. I have tanabe axle back and just replaced my resonators and man does it sound good now!

 

As some people have suggested, you can purchase a HFC solution to increase power and it will increase the exhaust note. You can look at the popular BERK HFC unit for your G37 sedan:



-Frank

 

^ highly recommend this!

 

I have some tanabe style mufflers for sale for cheap. PM me if interested.