H-Pipe Replacement on Nismo

chops · 07-30-2012, 12:47 AM

Quote:

Originally Posted by Compdoc777

From what I am told is the cats are the restriction. Any one can do a muffler delete and get the trick carbon fiber muffler with titanium blue tips for $60 off eBay and have them added to the rear of the current exhaust and have the same performance and sound as the 1200-1500 exhaust and still retain the heat shielding so you are not cooked from below.

I am on the fence of the x-pipe it works well for the 370z but I felt more performance when I had the Nismo exhaust on the car. I could feel the difference when I took it off but it was smoother, but think that is the balancing rubbers on the bottom of the exhaust.

theres definitely a restriction at the H-pipe as well. if you have a high flow cat, the pipe is 2.5". the opening to the H-pipe i believe was 2.25" and then it opens back up to 2.5" before it hits the muffler. from what a tech at a local shop told me, it was probably done to increase backpressure. he told me opening it up to 2.5" might increase the power a bit, but of course thats all hearsay.

with that said, heres another bump. still want an X-pipe or some sort of replacement for our nismo's!

Rooskey · 04-22-2011, 11:49 PM

Oh Yea! If anyone wants an X-pipe right now for there nismo or any other z you can get one from Dr. Gas Exhaust. You just have to weld it up. It comes across as a cheap product (to some people) but I have used them alot and the quality is good. The X section of there exhaust carries alot of volume (two pipes joined not two pipes into one). OR Tony could make us one from two pieces of tubing that bolts right in???

toxik · 04-25-2011, 03:30 PM

I just bought a 2.5'' X-Pipe replacement for the H-pipe from another member here. I'll take some videos and stuff once I get it installed. It was custom fabricated by a shop. I wish I could afford the Amuse one

FL 4Motion · 04-25-2011, 08:20 PM

Quote:

Originally Posted by toxik

I just bought a 2.5'' X-Pipe replacement for the H-pipe from another member here. I'll take some videos and stuff once I get it installed. It was custom fabricated by a shop. I wish I could afford the Amuse one

/\ mmmm, Amuse Titanium goodness, it's so beautiful I'd be actually sad to put it under the car where it could get dirty.

XLR8SN · 04-25-2011, 08:55 PM

I could justify the cost for the actual exhaust...but the H-pipe for 1700+...ick. A bit too much there.

Still hoping that FI is willing to make a few and maybe with some resonators to cut the rasp down.

XLR8SN · 05-03-2011, 06:42 PM

Has anyone been able to see Tony about this as of yet? Or does anyone have a fabricator that is willing to do this as of yet?

wishihadnav · 05-03-2011, 06:55 PM

I spoke to Tony about this last year and he can definatly fab one up at his shop if you bring it in...only thing is that there would be a very minimal amount of hp gain from this..probably just better to get a complete exhaust as othr people have stated.

Rooskey · 05-05-2011, 01:00 AM

I have talked to several exhaust manufacturers and they have stated that alot of them have seen better gains across the board with an exhaust that necks down in the center rather than a straight through 2.5, 3inch, etc exhaust. Everyone explains that it gives you a better average torque to hp range. Like I have said this is what I was told so I asked my friends that work for some Nascar teams (I live near charlotte and mooresville) and they told me that this is how the exhaust is on the race cars they work on. Although you have to keep in mind most race cars run at very high rpms, so with normal street driving it may not make a difference.

XLR8SN · 05-05-2011, 12:48 PM

Quote:

Originally Posted by Rooskey

I have talked to several exhaust manufacturers and they have stated that alot of them have seen better gains across the board with an exhaust that necks down in the center rather than a straight through 2.5, 3inch, etc exhaust. Everyone explains that it gives you a better average torque to hp range. Like I have said this is what I was told so I asked my friends that work for some Nascar teams (I live near charlotte and mooresville) and they told me that this is how the exhaust is on the race cars they work on. Although you have to keep in mind most race cars run at very high rpms, so with normal street driving it may not make a difference.

True...I can see the point in regards to high RPM's and exhaust scavenging effects from pressure and all...(<---cant explain it in scientific verbiage)....but get the point. Its just that for us Nismo owners...the rear portion of the exhaust has 2 feed pipes from the H pipe. So if we want to change out the H pipe....we need to replace it with a H or X pipe that still has 2 exits to feed into the rear muffler section.

I suppose that there are no "vendors" that really are going to do this for "mass production" and everyone will have to find a local shop to fab that part then. Kind of a bummer....but guess that this is where this is going.

wind.zero · 08-26-2011, 12:24 PM

Thread bounce ....

Has anyone found a bolt on replacement yet for the NISMO H-Pipe?

I am not willing to pay the price of admission for the AMUSE piece even though it is a great piece of kit. It would look better on a wall in my house than under the car ...

toxik · 08-26-2011, 12:33 PM

i had it on my Nismo exhaust, with the Berk HFCs, there was too much rasp... I sold it to JeffBlue (Nismo Exhaust + H-Pipe replacement) and with OEM HFCs, it sounds good.

wind.zero · 08-26-2011, 12:46 PM

Tony at F.I. is interested.

Someone with a NISMO has to be near Northridge CA so he can take a look at manufacturing this piece.

Anyone? Anyone? Bueller?
Oh wait, I bet a bunch of forum members are too young to get the reference.

theBroodwich · 02-21-2012, 02:50 PM

Any members still interested in something like this? Spoke with Tony today about fabricating a replacement and I will be following up over the next few weeks. He is a very busy man and it may take some time for me to get my Z into his shop for fabrication but I am set on getting one made for my car. If anyone else wants to get one made I could try to negotiate a decent price and based on his schedule he could possibly fab some extras.

XLR8SN · 02-21-2012, 11:38 PM

Quote:

Originally Posted by theBroodwich

Any members still interested in something like this? Spoke with Tony today about fabricating a replacement and I will be following up over the next few weeks. He is a very busy man and it may take some time for me to get my Z into his shop for fabrication but I am set on getting one made for my car. If anyone else wants to get one made I could try to negotiate a decent price and based on his schedule he could possibly fab some extras.

By all means go for it. Hopefully it can be done for a "fair" price.

Amuse370 · 02-22-2012, 12:19 PM

im in too and im local

02-22-2012, 12:19 PM	#15 (permalink)
Amuse370 Track Member Join Date: Mar 2011 Location: North Hills Age: 39 Posts: 523 Drives: 11' Nismo 370z Rep Power: 16	im in too and im local __________________ 2011 Nismo 370z Berks High Flow Cats \| Stillen G3 Intake \| GTM 25 Row Oil Cooler \| M370 \| UpRev tune \| H&R Spacers \| Sparco Fighters \| Top Secret Catch Cans \| M7 Japan Titan \| RS1 Fenders \|

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04-22-2011, 11:49 PM	#2 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 17	Oh Yea! If anyone wants an X-pipe right now for there nismo or any other z you can get one from Dr. Gas Exhaust. You just have to weld it up. It comes across as a cheap product (to some people) but I have used them alot and the quality is good. The X section of there exhaust carries alot of volume (two pipes joined not two pipes into one). OR Tony could make us one from two pieces of tubing that bolts right in???

04-25-2011, 08:55 PM	#5 (permalink)
XLR8SN Enthusiast Member Join Date: Jun 2009 Location: Hawaii Posts: 363 Drives: Nissan Rep Power: 17	I could justify the cost for the actual exhaust...but the H-pipe for 1700+...ick. A bit too much there. Still hoping that FI is willing to make a few and maybe with some resonators to cut the rasp down.

05-03-2011, 06:42 PM	#6 (permalink)
XLR8SN Enthusiast Member Join Date: Jun 2009 Location: Hawaii Posts: 363 Drives: Nissan Rep Power: 17	Has anyone been able to see Tony about this as of yet? Or does anyone have a fabricator that is willing to do this as of yet?

05-03-2011, 06:55 PM	#7 (permalink)
wishihadnav A True Z Fanatic Join Date: Nov 2009 Location: 90090 Posts: 1,851 Drives: Force Fed Nismo Rep Power: 184	I spoke to Tony about this last year and he can definatly fab one up at his shop if you bring it in...only thing is that there would be a very minimal amount of hp gain from this..probably just better to get a complete exhaust as othr people have stated.

05-05-2011, 01:00 AM	#8 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 17	I have talked to several exhaust manufacturers and they have stated that alot of them have seen better gains across the board with an exhaust that necks down in the center rather than a straight through 2.5, 3inch, etc exhaust. Everyone explains that it gives you a better average torque to hp range. Like I have said this is what I was told so I asked my friends that work for some Nascar teams (I live near charlotte and mooresville) and they told me that this is how the exhaust is on the race cars they work on. Although you have to keep in mind most race cars run at very high rpms, so with normal street driving it may not make a difference.

08-26-2011, 12:24 PM	#10 (permalink)
wind.zero Enthusiast Member Join Date: Apr 2011 Location: The 49th State Posts: 296 Drives: NISMOSIS Rep Power: 15	Thread bounce .... Has anyone found a bolt on replacement yet for the NISMO H-Pipe? I am not willing to pay the price of admission for the AMUSE piece even though it is a great piece of kit. It would look better on a wall in my house than under the car ...

08-26-2011, 12:46 PM	#12 (permalink)
wind.zero Enthusiast Member Join Date: Apr 2011 Location: The 49th State Posts: 296 Drives: NISMOSIS Rep Power: 15	Tony at F.I. is interested. Someone with a NISMO has to be near Northridge CA so he can take a look at manufacturing this piece. Anyone? Anyone? Bueller? Oh wait, I bet a bunch of forum members are too young to get the reference.

02-21-2012, 02:50 PM	#13 (permalink)
theBroodwich Base Member Join Date: May 2011 Location: LA Posts: 33 Drives: 11 Nismo Rep Power: 15	Any members still interested in something like this? Spoke with Tony today about fabricating a replacement and I will be following up over the next few weeks. He is a very busy man and it may take some time for me to get my Z into his shop for fabrication but I am set on getting one made for my car. If anyone else wants to get one made I could try to negotiate a decent price and based on his schedule he could possibly fab some extras.