Hey Guys,

I have a stock g37xS Coupe and it is completely stock. I love the sound of our exhausts but I want it to be a little louder. I've done a ton of research into which cats give the best exahust note enhancement along with a louder tone and it seems like the FI RHFC are the sound choice. However, I was curious if anyone can opine on how much more louder FI RHFC's will make a completely stock S coupe? I would assume maybe 30-40% louder? I'm not looking for HP gains or some rice sounds/fart can honda which is why I am seeking some advice. This probably would be the only mod I do to my car. Also, would this be the most logical option or are their cheaper/better alternatives to adding some oomph to the stock exhaust note.

Let me know if you need any further information. Thank you!

 

 

If you don’t want rice/fart sounds don’t touch your cats. Watch any video of a G w/ hfc or test pipe and they have unwanted hissing sound and don’t sound great. Just scoop a Nismo Z or IPL stock exhaust (I think someone on this forum is selling IPL mid/flex pipes) if you want a slightly better tone. Or just leave it as is.

 

Haha I actually saw this online yesterday as part of my research. The hard part is figuring out how much more louder it sounds compared to stock; and when listening to it through a video camera its hard to capture that difference.