Don't like sound with TP

TheBoomSpoon · 07-04-2014, 10:05 PM

I think i want to go back to my aam hfc rather than keeping the aam de test pipes in conjunction with the vqde35 headers.

Does anyone know if z1 produced something that link your 370z hfc to the vqde35 headers. Otherwise gonna have those headers removed also. I cannot stand the low rpm rasp, makes the car sound like its struggling, with the hfc you only heatd some hiss which sounds great during decel.

nogoodname · 07-04-2014, 10:15 PM

There's nothing. DE headers won't work with HR/VHR HFC/TP/Cats.

TheBoomSpoon · 07-05-2014, 07:10 AM

Quote:

Originally Posted by nogoodname

There's nothing. DE headers won't work with HR/VHR HFC/TP/Cats.

They dont mate up to sny 370z hfc or test pipes, thats why i had to get 350z test pipes or the z1 set of test pipes. Z1 was going to make a plate to allow regular 370 hfc or tp to connect up bit i dont see it on their site and it should be available by now

Jordo! · 07-05-2014, 11:01 AM

Quote:

Originally Posted by TheBoomSpoon

I think i want to go back to my aam hfc rather than keeping the aam de test pipes in conjunction with the vqde35 headers.

Does anyone know if z1 produced something that link your 370z hfc to the vqde35 headers. Otherwise gonna have those headers removed also. I cannot stand the low rpm rasp, makes the car sound like its struggling, with the hfc you only heatd some hiss which sounds great during decel.

Swap them out for resonated TP's -- that will eliminate 90% of it.

EDIT: Wait, am I reading this correctly? You are limited in your options? You might be able to have resonators welded in somewhere...

DEpointfive0 · 07-05-2014, 01:51 PM

Quote:

Originally Posted by Jordo!

Swap them out for resonated TP's -- that will eliminate 90% of it.

EDIT: Wait, am I reading this correctly? You are limited in your options? You might be able to have resonators welded in somewhere...

No it won't. I have double resonated test pipes. They don't do much. Art pipes probably would

Tempestz · 07-05-2014, 02:05 PM

Any de hfc will work with those headers. Sell your 370z hfc and de test pipes and youll have enough to buy 350z hfc.

Jordo! · 07-05-2014, 06:36 PM

Quote:

Originally Posted by DEpointfive0

No it won't. I have double resonated test pipes. They don't do much. Art pipes probably would

Really? I originally had straight pipes, which was unbearably raspy on coast down, and then switched to CNT resonated TP's and that was a 100% improvement.

It still had a little raspiness, so fair enough, but it was substantially reduced as compared to the unresonated TP's. I'm surprised (and disappointed to hear) your double-resonated ones don't knock it out entirely.

Also, is your set up a custom one? I didn't even know there were double resonated TP's.

Tempestz · 07-09-2014, 05:19 AM

MXP sells double resonated tp.

DEpointfive0 · 07-09-2014, 09:16 AM

Quote:

Originally Posted by Tempestz

MXP sells double resonated tp.

Yeah, them and I have Megans

synolimit · 07-10-2014, 06:07 AM

Quote:

Originally Posted by DEpointfive0

No it won't. I have double resonated test pipes. They don't do much. Art pipes probably would

bingo!!

to kill rasp you need a helmholtz resonator like an ART design. an inline doesnt do crap. or you can add your own. i did mine in the X pipe and hey work 100%

Staples · 07-10-2014, 09:41 AM

It's amazing the difference the Helmholtz resonator design makes. I have yet to hear a raspy setup matched with ART pipes (including the HKS exhaust).

brancky3 · 07-10-2014, 12:28 PM

Quote:

Originally Posted by synolimit

bingo!!

to kill rasp you need a helmholtz resonator like an ART design. an inline doesnt do crap. or you can add your own. i did mine in the X pipe and hey work 100%

So essentially it's just a resonator but capped off at the end? Any muffler shop should be able to fab this up, right?

I have test pipes waiting to be installed and you're all worrying me with this talk of rasp...

synolimit · 07-10-2014, 08:48 PM

Quote:

Originally Posted by brancky3

So essentially it's just a resonator but capped off at the end? Any muffler shop should be able to fab this up, right?

I have test pipes waiting to be installed and you're all worrying me with this talk of rasp...

Pretty much.

NoirG · 07-14-2014, 12:01 PM

Quote:

Originally Posted by Staples

It's amazing the difference the Helmholtz resonator design makes. I have yet to hear a raspy setup matched with ART pipes (including the HKS exhaust).

You heard hks exhaust + art pipes combo with no rasp?

07-04-2014, 10:05 PM	#1 (permalink)
TheBoomSpoon Base Member Join Date: Feb 2014 Location: Charlotte, NC Posts: 223 Drives: 2009 370z 7at Rep Power: 11	Don't like sound with TP I think i want to go back to my aam hfc rather than keeping the aam de test pipes in conjunction with the vqde35 headers. Does anyone know if z1 produced something that link your 370z hfc to the vqde35 headers. Otherwise gonna have those headers removed also. I cannot stand the low rpm rasp, makes the car sound like its struggling, with the hfc you only heatd some hiss which sounds great during decel.

07-05-2014, 02:05 PM	#6 (permalink)
Tempestz Enthusiast Member Join Date: Jul 2013 Location: Ewa Beach, HI Posts: 346 Drives: 10-370Z-MB-7AT Rep Power: 12	Any de hfc will work with those headers. Sell your 370z hfc and de test pipes and youll have enough to buy 350z hfc. __________________ Certified Exhaust Whore

07-09-2014, 05:19 AM	#8 (permalink)
Tempestz Enthusiast Member Join Date: Jul 2013 Location: Ewa Beach, HI Posts: 346 Drives: 10-370Z-MB-7AT Rep Power: 12	MXP sells double resonated tp. __________________ Certified Exhaust Whore

07-10-2014, 09:41 AM	#11 (permalink)
Staples Track Member Join Date: Sep 2010 Location: Baltimore, MD Posts: 546 Drives: '08 Infiniti G37s Rep Power: 16	It's amazing the difference the Helmholtz resonator design makes. I have yet to hear a raspy setup matched with ART pipes (including the HKS exhaust). __________________ '08 Infiniti G37s - Forced Induction Fed

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07-04-2014, 10:15 PM	#2 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1765	There's nothing. DE headers won't work with HR/VHR HFC/TP/Cats.