I have an HKS HI-Power catback exhaust. I think I posted a review of it on 2/17/21 if you scroll up a bit. If you hate droning exhausts like I do, I’d recommend the HKS Hi-Power (just the exhaust if you don’t want to go the catback route. Quiet when cruising but has a throaty scream on hard acceleration, particularly above 4K rpm. Otherwise it just doesn’t drone unless you lug it at low rpm in a high gear (any exhaust might drone under that circumstance). Good luck!

 

Anyone here try running the Tanabe Revel Mid and Y pipe with the sport accessory muffler? Or any IPL coupe owners try the sports accessory muffler with the IPL exhaust? Next weekend I’m going to pull the mufflers/cans of my HKS Hi-Power off of my coupe, and am having two 60mm connecting pipes fabricated to attach the HKS midsection (and H pipe of course) to the sports accessory muffler instead. A little sound experiment. The sport accessory muffler sounds amazing in the few videos I’ve heard but definitely still had some rasp with the OEM midpipe and y pipe, so I’m hoping the HKS (with an H pipe) will balance it out, make it louder, and retain that VQ purr. Keeping the 60mm piping as consistent as possible, from the HKS, to the connectors, to the muffler inlets. I have some AAM 2.5 RHFCs I still need to put on also, hoping it will be a symphony once everything is done.

 

I have an invidia gemini catback, looking for test pipes but stuck between res and non res, what y’all think?

 

Torqen 200 cel hfcs and custom made 2.5" H pipe system. Love it

 

What kinda trunk spoiler is this?

 

I have a FI R-Cat and standard OEM exhaust. I have been running this for 10+ years and have received several compliments on the sound. IMO, It's hard to find another factory production 6 banger with a better sound!

 

New Guy Here...both to the forum and JapTech but I've been involved with cars for about 55 years now.

My question is about a 2012 G37 Coupe I bought yesterday which is my first Ricer. The previous owner is a mechanic at the dealership I bought the car from, and he had installed a full I.S.R. Performance Exhaust system all the way from engine to exhaust tips (and of course no cats) I'm just curious about how much H.P. gain that would give, the engine is originally a 320 H.P. V6 and has only 35,000 miles on it. I doubt anyone will call the car fast, but it did impress both in handling and acceleration.

I tried to include a short video of as much of the system as I could film but I guess I can't upload MP4...

 

Beluga Racing exhaust with ISR Y pipe. I'm fairly happy with this set up sound wise and it is quite subtle appearance wise.

 

Here is a few sound clips of my setup. https://www.reddit.com/r/G37/comment...ular_ypipe_z1/

ISR Long-tube Headers, Z1 Modular Y-pipe, Z1 Touring Cat-back Exhaust

Sound clip includes: Static revving, casual launch, casual drive-by, aggressive launch, & aggressive drive-by