09 Nismo Z exhaust project

Chuck33079 · 02-13-2014, 08:25 PM

It would be a shame to go through all of that work to make less power than the stock cat back with hfcs.

Fulljim · 02-13-2014, 09:27 PM

I still think that 3in is ALOT of flow for an N/A engine.
Check the Amuse R1000 single exit, its 3in and there is
considarable gains with it.

With those HFC and custom Y pipe, this exhaust will be ALOT les
restrictive than stock.

We'll see

I'll consider changing to 3,5in if I go SC at 500HP for sure

Thx for the comments

Chuck33079 · 02-13-2014, 09:31 PM

3" is a lot less flow than stock. Any gains you see will be from the HFCs.

The VQ moves a lot of air. It's a big 6 that revs high. You need a lot of flow to keep from choking it up top.

Fulljim · 02-14-2014, 09:16 AM

You have to read this than...

Thinking out side the box 370z SINGLE TIP EXHAUST

Chuck33079 · 02-14-2014, 09:26 AM

I must have read that wrong. There's no final numbers and several people in that thread are pointing out that 3" may not be ideal. Do the math. Look at the link I posted. Look at the right hand column in that chart attached to it. Double the area of the 2.5" and then subtract the area of the 3" pipe. That's the reduction in area of the single 3". In order for your project to work as planned, you should really run a 3.5".

It's your car, but get a baseline on a dyno beforehand with the hfcs already installed. That way it'll be easy to see if you've improved things or made them worse.

Fulljim · 02-14-2014, 11:01 AM

Amuse R1000, 3in tubing, 15hp gain ....

Chuck33079 · 02-14-2014, 11:19 AM

It's your car. If that's enough for you to disregard the math and go with a vague post in a thread that really doesn't have any hard data in it, go for it.

Megan370z · 02-14-2014, 11:20 AM

Quote:

Originally Posted by Fulljim

Amuse R1000, 3in tubing, 15hp gain ....

the problem with the OEM exhaust is mostly the Y-Pipe which restrict a LOT since the exit of the y-pipe isnt 3'' if I remember correctly ( I will have to mesure mine after work and provide with a true mesurement)

that Amuse single in 3'' will provide more flow than the OEM Y-pipe which also give more power.. but the VHR can flow a lot more than a 3'' single.

remember that 15hp you are talking about with the Amuse R1000
its basicaly the same with the Fast Intension cat-back

Chuck33079 · 02-14-2014, 11:23 AM

Quote:

Originally Posted by Megan370z

the problem with the OEM exhaust is mostly the Y-Pipe which restrict a LOT since the exit of the y-pipe isnt 3'' if I remember correctly ( I will have to mesure mine after work and provide with a true mesurement)

that Amuse single in 3'' will provide more flow than the OEM Y-pipe which also give more power.. but the VHR can flow a lot more than a 3'' single.

remember that 15hp you are talking about with the Amuse R1000
its basicaly the same with the Fast Intension cat-back

We're basically talking to the wall, man.

jwick · 02-14-2014, 11:34 AM

Quote:

Originally Posted by Chuck33079

It's your car. If that's enough for you to disregard the math and go with a vague post in a thread that really doesn't have any hard data in it, go for it.

What's this math you speak of, is that a recent discovery?

I thought all I had to do was believe everything I read on the intraweb

Chuck33079 · 02-14-2014, 11:37 AM

That **** with numbers is scary, man.

jwick · 02-14-2014, 11:42 AM

Quote:

Originally Posted by Chuck33079

That **** with numbers is scary, man.

jwick · 02-14-2014, 11:52 AM

Quote:

Originally Posted by Megan370z

the problem with the OEM exhaust is mostly the Y-Pipe which restrict a LOT since the exit of the y-pipe isnt 3'' if I remember correctly ( I will have to mesure mine after work and provide with a true mesurement)

that Amuse single in 3'' will provide more flow than the OEM Y-pipe which also give more power.. but the VHR can flow a lot more than a 3'' single.

remember that 15hp you are talking about with the Amuse R1000
its basicaly the same with the Fast Intension cat-back

It's 2.5" O.D. but with thin wall pipe I.D. and O.D. are pretty close

Megan370z · 02-14-2014, 12:24 PM

Quote:

Originally Posted by jwick

It's 2.5" O.D. but with thin wall pipe I.D. and O.D. are pretty close

you close but not quite.

OEM Y-pipe exit spec is as follow ; avg 2.5'' OD and 2.350'' ID ,, its a double wall exit (inner sleeve)

Dzel · 02-14-2014, 12:32 PM

In for laughs!!!

02-13-2014, 08:25 PM	#31 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	It would be a shame to go through all of that work to make less power than the stock cat back with hfcs. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-13-2014, 09:27 PM	#32 (permalink)
Fulljim Base Member Join Date: Mar 2013 Location: Qc, Canada Posts: 44 Drives: 09 Nismo 370Z Rep Power: 12	I still think that 3in is ALOT of flow for an N/A engine. Check the Amuse R1000 single exit, its 3in and there is considarable gains with it. With those HFC and custom Y pipe, this exhaust will be ALOT les restrictive than stock. We'll see I'll consider changing to 3,5in if I go SC at 500HP for sure Thx for the comments Dzel likes this.

02-13-2014, 09:31 PM	#33 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	09 Nismo Z exhaust project 3" is a lot less flow than stock. Any gains you see will be from the HFCs. The VQ moves a lot of air. It's a big 6 that revs high. You need a lot of flow to keep from choking it up top. Dzel likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-14-2014, 09:26 AM	#35 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	I must have read that wrong. There's no final numbers and several people in that thread are pointing out that 3" may not be ideal. Do the math. Look at the link I posted. Look at the right hand column in that chart attached to it. Double the area of the 2.5" and then subtract the area of the 3" pipe. That's the reduction in area of the single 3". In order for your project to work as planned, you should really run a 3.5". It's your car, but get a baseline on a dyno beforehand with the hfcs already installed. That way it'll be easy to see if you've improved things or made them worse. Dzel likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-14-2014, 11:19 AM	#37 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	It's your car. If that's enough for you to disregard the math and go with a vague post in a thread that really doesn't have any hard data in it, go for it. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-14-2014, 09:16 AM	#34 (permalink)
Fulljim Base Member Join Date: Mar 2013 Location: Qc, Canada Posts: 44 Drives: 09 Nismo 370Z Rep Power: 12	You have to read this than... Thinking out side the box 370z SINGLE TIP EXHAUST

02-14-2014, 11:01 AM	#36 (permalink)
Fulljim Base Member Join Date: Mar 2013 Location: Qc, Canada Posts: 44 Drives: 09 Nismo 370Z Rep Power: 12	Amuse R1000, 3in tubing, 15hp gain ....

02-14-2014, 11:37 AM	#41 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	That **** with numbers is scary, man. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

02-14-2014, 12:32 PM	#45 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 23	In for laughs!!! luigi90210 likes this. __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

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