GTM Performance Engineering: MHI Twin Turbo Official Release

V1H · 01-06-2014, 03:40 PM

Ah yes sure, common sense, even to me

Thx m8

The choice of exhaust is still my greatest cause for headache.
Naturally I'd want a 3" catback to maximize turbo efficiency, which I only know the Greddy Turbo Ti-C has. But I don't like its sound. In fact, I haven't yet found a single Z exhaust with the right noise. I've been heavily pampered by ferocious VTEC screams of my nitrous battered Stage2 3/4 Race motor and look for a good race noise for my Z. But working on a £3k Honda is a different matter. I wanna leave my Z engine untouched. And test pipes are no option towards that goal. I got to be able to pass M.O.T. of course.

Cell · 01-06-2014, 04:19 PM

Quote:

Originally Posted by V1H

Ah yes sure, common sense, even to me

Thx m8

The choice of exhaust is still my greatest cause for headache.
Naturally I'd want a 3" catback to maximize turbo efficiency, which I only know the Greddy Ti-C has. But I don't like its sound. In fact, I haven't yet found a single Z exhaust with the right noise. I've been heavily pampered by ferocious VTEC screams and look for real race noise for my Z. But, test pipes are no option towards that goal I got to be able to pass M.O.T. of course.

I believe the Greddy TI-C is 2.75".

Fast intentions makes a 3" exhaust setup.

BlkNismo · 01-06-2014, 04:38 PM

Quote:

Originally Posted by Cell

I believe the Greddy TI-C is 2.75".

Fast intentions makes a 3" exhaust setup.

That is accurate.

I tossed around the idea of running full 3" turbo back, but it being my primary car, i dont think i want all the noise associated. was very close to pulling the trigger on the fast intentions exhaust.

I have since sold the gtm downpipes and have the z1 testpipes and will run oem nismo catback.

Should be sufficient. Dont plan on running more then 7psi with stg 1 gt28's on stock block.

TerribleONE · 01-06-2014, 08:53 PM

Quote:

Originally Posted by BlkNismo

That is accurate.

I tossed around the idea of running full 3" turbo back, but it being my primary car, i dont think i want all the noise associated. was very close to pulling the trigger on the fast intentions exhaust.

I have since sold the gtm downpipes and have the z1 testpipes and will run oem nismo catback.

Should be sufficient. Dont plan on running more then 7psi with stg 1 gt28's on stock block.

The turbos really quiet the car down, and if you are still concerned with the noise level you can go with their HFC option that is located in the lead pipes to make it even quieter.

Chuck33079 · 01-06-2014, 09:06 PM

Quote:

Originally Posted by TerribleONE

The turbos really quiet the car down, and if you are still concerned with the noise level you can go with their HFC option that is located in the lead pipes to make it even quieter.

Yep. Between the turbos and the catted 3" FI exhaust, mines pretty quiet at anything other than wot.

jlo370z · 01-08-2014, 08:12 AM

Quote:

Originally Posted by TerribleONE

The turbos really quiet the car down, and if you are still concerned with the noise level you can go with their HFC option that is located in the lead pipes to make it even quieter.

im just curious would the catted fi exhaust eliminate CEL light from coming on?

Chuck33079 · 01-08-2014, 08:16 AM

Quote:

Originally Posted by jlo370z

im just curious would the catted fi exhaust eliminate CEL light from coming on?

No, the cats are way downstream past the O2 sensors. The CEL for not having cats is turned off on turbo kits anyway.

V1H · 01-06-2014, 04:55 PM

Quote:

Originally Posted by Cell

I believe the Greddy TI-C is 2.75".

Fast intentions makes a 3" exhaust setup.

Not quite, the Greddy Turbo Ti-C comes as 3" as featured on Nissan's Project Z car, the non-turbo Ti-C has 2.75".
Would be interesting to 'hear' the 3" F.I. exhaust. It's non-resonated? Though, I only find the 2.5" TDX catback on their web page with a video of the (very quiet) 12" resonator option.

Quote:

Originally Posted by BlkNismo

I have since sold the gtm downpipes and have the z1 testpipes and will run oem nismo catback.

Would you consider the downpipe or test pipe to make more noise? Don't u have emission problems with the TPs?

BlkNismo · 01-06-2014, 09:52 PM

Would you consider the downpipe or test pipe to make more noise? Don't u have emission problems with the TPs?[/QUOTE]

the sound is probably similar, however with the downpipes you need to run 3" catback.

01-06-2014, 03:40 PM	#1 (permalink)
V1H Base Member Join Date: Dec 2013 Location: United Kingdom Posts: 244 Drives: 2013 370Z-TT GT Edt Rep Power: 3367	Ah yes sure, common sense, even to me Thx m8 The choice of exhaust is still my greatest cause for headache. Naturally I'd want a 3" catback to maximize turbo efficiency, which I only know the Greddy Turbo Ti-C has. But I don't like its sound. In fact, I haven't yet found a single Z exhaust with the right noise. I've been heavily pampered by ferocious VTEC screams of my nitrous battered Stage2 3/4 Race motor and look for a good race noise for my Z. But working on a £3k Honda is a different matter. I wanna leave my Z engine untouched. And test pipes are no option towards that goal. I got to be able to pass M.O.T. of course. Last edited by V1H; 01-07-2014 at 05:01 AM.

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01-06-2014, 09:52 PM	#9 (permalink)
BlkNismo Track Member Join Date: Sep 2011 Location: USA Posts: 614 Drives: Nismo Rep Power: 15	Would you consider the downpipe or test pipe to make more noise? Don't u have emission problems with the TPs?[/QUOTE] the sound is probably similar, however with the downpipes you need to run 3" catback.