i been running my hr y pipe on my coupe for over a month now. highly recommend this mod.

 

On my 03 sedan, I have the 05/06 sedan midpipe, HR y-pipe, and Z-tube. Using the 05/06 midpipe with the 03 muffler emits a much deeper sound than the 05/06 sedan because the 03 uses a 20% smaller muffler. Prior to the y-pipe, the volume, though deeper and not quite as warbly, was in line with that of a stock coupe/Z. After adding the y-pipe, the sound became slightly deeper and louder (another 10-15%), but there is no drone (thank God). The sound is very sporty and you can hear it in the cabin. The sound is very fluid at all rpms which is something that's hard to get with a V6. Loud exhausts are great, as long as they sound fluid and don't drone. With V8s, it's easy to come by and with V6s, it's damn near impossible. Years ago I had the Borla TD. The volume, drone, and vibration increase was just too much especially from 1000 to 4000rpms under moderate load. The 1800-2400rpm drone was super annoying. I sold the exhaust after 2 weeks. I really didn't notice any percievable gains either which was a huge let down.

IMO, HFCs with a HR y-pipe will sound amazing. If you have an 03/04 sedan, adding the coupe or 05/06 sedan midpipe might add some rasp, but the volume and drone won't compare to that of the Borla.

Here's a video of my G under 30% load. FYI, the faint metallic rattle you hear at first is because the car and exhaust was cold. After a 5 minute warm up, the sound dissappears. When temps are above 70, you never hear the sound.



Picture of the difference between the DE y-pipe (left) and HR y-pipe (right)

 

^ that 350Z y pipe looks as same as the g37 Y pipe whats the difference i still don't get.

 

bro all jokes aside, ur car compared to mine is QUIET! lol Literally. i think ima get rid of the borla. Its super loud together with these other parts. when it was just borla it was quiet as hell nice deep done, sexy, but NOW. lol Holy **** literally.

lev u heard my car. and after that I installed the md 5/16 spacer. and resetted the ecu. With the cold weather now. WOW when im cruising, deeeeep, no drone but kind of loud enough to say. its 2 loud.

 

Post it up eko we wanna hear it.

 

Here u Go

 

haha, Yes, Eko's car is Mad loud but it sounds soo good.

 

Z tube + Crawford Plenum + HR Y PIPE + coupe mid pipe + 05+ sedan muffler
I took off the HKS due to drone under load. I love my new setup now, sounds kinda like the coupe

 

^dont notice much of a difference over stock

Maybe its an in person thing? I love the sound of the HKS.

 

I can tell a bit of a difference. Just wonder why he didn't use the smaller 03-04 muffler

Also, I love my HKS, but sometimes the drone gets old on a long drive or when accelerating slowly

 

I have noticed it as well. Only when i have my dad in the car though...

 

I did.....I have both and its softer than the 05+ sedan mufflers, I went through great lengths to get the 05+ mufflers to fit....now I have no drone on any rpm range muahahaha i love it

 

thanx pal. If I didnt enjoy beatin on G37s I wouldve gotten rid of my exhaust lol

 

Wait, you beat up G37s in your 05 X?

 

nice thread, givin' me some low cost alternetives for the Wife's G. she like's my setup(DC headers+Kinetix HFCs+Stillen Gen2), but a lil' too loud for her day to day.