Just installed a HR Y-Pipe from a 2008 Z yesterday to complement my coupe mid pipe and Z-tube. The setup sounds great without being too intrusive and is a solid improvement on the coupe mid pipe.

 

Did you notice more of a difference in sound when installed? If so was it a big one?

 

It is a pretty drastic difference in sound. The exhaust note is louder as well as more rich/throaty and can be heard inside the car throughout more of the rev range.

 

^+1 on the big difference in sound.

I listen to my radio less now.

GREAT great inexpensive mod for the sedan.

Z-Tube
HR Y-Pipe
06 Coupe Mid-Pipe
06 Coupe RevUp Airbox

 

+1 on the great mod. I don't know if I'd say it were louder (probably in denial)... but definitely deeper more aggressive sound. For reference, I've got -

Stillen Intake
Z-tube
HR Y-pipe
Fujitsubo

 

My intake/induction setup so far is:

Z-Tube w/ K&N drop in
Motordyne plenum spacer
HR Y-Pipe
Coupe Mid-Pipe

I'm carefully walking the yes/no line on getting the HKS axle back because although I'd love a very aggressive and noticeable sound, I'm not sure if I'd like to deal with it on a daily basis. I had a full HKS cat back on my 1995 Nissan 300ZX which sounded like heaven but the police attention and monthly stack of exhaust tickets got old really fast so I ended up taking it off.

 

Rev-up airbox, OEM Z-Tube, 5/16ths spacer, HR Y-Pipe off a 2008 Z, Sedan middy

One of the things I'm loving about the warmer weather is having the sunroof open and hearing that sweet intake and exhaust note. I love the deep drone. I think these are the best mods anyone can do to a G. Can't wait to finish it off with the HKS Sport axle back.

 

i really wish someone would do thru the trouble of getting some dyno numbers on this HR y-pipe.

it does sound nice from a lot of clips i've heard. but frankly i'm not putting that money up just for sound.

 

Does anyone have pix of under their car with hr y pipe?

 

The HR also helped to improve my throttle response and made the shifts crisper. Couldn't give you a technical reason for this, but it definitely made a difference.

 

Check this out
https://g35driver.com/forums/reviews...pe-dynoed.html
I have one on my car, and with or without a power gain I couldn't live without it now. I was able to pick mine up for $50 shipped, and at this price (or more) it is a huge improvement over stock.

 

The post only talks about peak. I'd be interested in seeing corrected values (may be corrected), but the values are all within a margin of error.

I'd also be interested in seeing the curves, since there may be HP gains elsewhere and not just on peak.