Nissan 370Z Forum  

Bypassing base exhaust Y pipe.

Would there be any reason not to bypass the base exhaust Y pipe with an H pipe?

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust

Like Tree1Likes
  • 1 Post By GZ3

Reply
 
LinkBack Thread Tools Display Modes
Old 08-11-2015, 01:31 PM   #1 (permalink)
Now Back to the Good Part
 
BoneZ's Avatar
 
Join Date: May 2015
Location: Atlanta, GA
Age: 49
Posts: 9,188
Drives: 2012 Silver Thang
Rep Power: 2684379
BoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond repute
Default Bypassing base exhaust Y pipe.

Would there be any reason not to bypass the base exhaust Y pipe with an H pipe?
BoneZ is offline   Reply With Quote
Old 08-11-2015, 01:32 PM   #2 (permalink)
Now Back to the Good Part
 
BoneZ's Avatar
 
Join Date: May 2015
Location: Atlanta, GA
Age: 49
Posts: 9,188
Drives: 2012 Silver Thang
Rep Power: 2684379
BoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond repute
Default

Like this?

__________________
“Those who stand for nothing fall for everything.” Alexander Hamilton, 1778
BoneZ is offline   Reply With Quote
Old 08-11-2015, 05:12 PM   #3 (permalink)
Track Member
 
Join Date: Apr 2015
Location: Columbus OH
Posts: 612
Drives: Z34|C4LT4|C6Z06|V25
Rep Power: 3363
POS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond reputePOS VETT has a reputation beyond repute
Default

Ok, color me curious.

I've been pondering over this trend among you guys, "Z people". Out there, when there is a V8 engine in a vehicle, usually of a domestic brand, the OEM exhaust tends to have a H-pipe (save for a few models). The aftermarket usually have X-pipe as an upgrade, or if the aftermarket company cared more, the crossover pipe is in the form of two nicely-siamesed pipes ala NASCAR which subscribes to the notion that this configuration is best at scavenging and equalizing exhaust gas flow-pressure-whatnots.

Now, the 370Z OEM configuration is in the form "double Y", perfect for merging pulses and maximizing scavenging effect. My NISMO S-Tune exhaust has this configuration while my DC Sport has very very nicely crafted, siamesed crossover pipes. From noise point of view, "true dual" and H configurations create an alternating pulse sequence between the tailpipes while the siamesed and X configurations create equal pulse sequence between the two due to blended and merged pulses from both banks.

So, what is the feature that becomes so popular with "true dual" exhausts in the world of Z cars? Is it the noise characteristics? Bragging rights? Popular belief? Please enlighten me.
POS VETT is offline   Reply With Quote
Old 08-11-2015, 07:39 PM   #4 (permalink)
GZ3
A True Z Fanatic
 
GZ3's Avatar
 
Join Date: Dec 2009
Location: SATX
Posts: 3,297
Drives: Z
Rep Power: 18
GZ3 is just really niceGZ3 is just really niceGZ3 is just really niceGZ3 is just really nice
Default

Quote:
Originally Posted by POS VETT View Post
Ok, color me curious.

I've been pondering over this trend among you guys, "Z people". Out there, when there is a V8 engine in a vehicle, usually of a domestic brand, the OEM exhaust tends to have a H-pipe (save for a few models). The aftermarket usually have X-pipe as an upgrade, or if the aftermarket company cared more, the crossover pipe is in the form of two nicely-siamesed pipes ala NASCAR which subscribes to the notion that this configuration is best at scavenging and equalizing exhaust gas flow-pressure-whatnots.

Now, the 370Z OEM configuration is in the form "double Y", perfect for merging pulses and maximizing scavenging effect. My NISMO S-Tune exhaust has this configuration while my DC Sport has very very nicely crafted, siamesed crossover pipes. From noise point of view, "true dual" and H configurations create an alternating pulse sequence between the tailpipes while the siamesed and X configurations create equal pulse sequence between the two due to blended and merged pulses from both banks.

So, what is the feature that becomes so popular with "true dual" exhausts in the world of Z cars? Is it the noise characteristics? Bragging rights? Popular belief? Please enlighten me.
Agreed.

Most domestics i have owened came with an h pipe and we upgraded to X all the time. Idk what the z worlds obsession with true dual seems to be. I noticed this come out more in my 350 days. From all my experience its always been Y<TD<H<X for hp and tq. I cant wait to add an X pipe to my set up
__________________
09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD
GZ3 is offline   Reply With Quote
Old 08-11-2015, 07:56 PM   #5 (permalink)
Now Back to the Good Part
 
BoneZ's Avatar
 
Join Date: May 2015
Location: Atlanta, GA
Age: 49
Posts: 9,188
Drives: 2012 Silver Thang
Rep Power: 2684379
BoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond reputeBoneZ has a reputation beyond repute
Default

Quote:
Originally Posted by GZ3 View Post
Agreed.

Most domestics i have owened came with an h pipe and we upgraded to X all the time. Idk what the z worlds obsession with true dual seems to be. I noticed this come out more in my 350 days. From all my experience its always been Y<TD<H<X for hp and tq. I cant wait to add an X pipe to my set up
So the benefit would be in reworking this to an X?
__________________
“Those who stand for nothing fall for everything.” Alexander Hamilton, 1778
BoneZ is offline   Reply With Quote
Old 08-11-2015, 08:31 PM   #6 (permalink)
GZ3
A True Z Fanatic
 
GZ3's Avatar
 
Join Date: Dec 2009
Location: SATX
Posts: 3,297
Drives: Z
Rep Power: 18
GZ3 is just really niceGZ3 is just really niceGZ3 is just really niceGZ3 is just really nice
Default

Quote:
Originally Posted by BoneZ View Post
So the benefit would be in reworking this to an X?
Absolutely

Even when i had my 5.0, it came with an h pipe, i upgraded to an off road H, made great gains, then upgraded to off road X, made an additional 5rwhp and tq with gains ALL under the curve. The best exhausts for the Z have x pipe configurations, most notable fast intentions. Imo the best one for our car thus far

I would wait till sept when garageline stocks back up thier X/mid pipe combo... 299.99... It looks identical to the magnaflow/kooks x pipes for the domestic world... Its a beautiful piece
Memphis370Z likes this.
__________________
09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD
GZ3 is offline   Reply With Quote
Old 08-11-2015, 11:12 PM   #7 (permalink)
Enthusiast Member
 
Join Date: Feb 2014
Location: California
Posts: 319
Drives: 14 370z
Rep Power: 8
Akurei is on a distinguished road
Default

Whoops, been calling my X pipe a true dual. Better rephrase bwahaha.

Anyways, you might as well get rid of that whole area from the cats to the resonators. It was like 1.75-1.95 inches (diameter). A disgrace for a sports car honestly

Last edited by Akurei; 08-11-2015 at 11:14 PM.
Akurei is offline   Reply With Quote
Old 08-12-2015, 11:14 AM   #8 (permalink)
Track Member
 
Join Date: May 2014
Location: Riverside
Posts: 584
Drives: 40th 370Z
Rep Power: 9
lj909 is on a distinguished road
Default

Quote:
Originally Posted by POS VETT View Post
So, what is the feature that becomes so popular with "true dual" exhausts in the world of Z cars? Is it the noise characteristics? Bragging rights? Popular belief? Please enlighten me.
I think the popularity of getting exhaust work done on this car is because the factory Y pipe is so small that pretty much ANY exhaust is an improvement over the small OEM Y setup.
__________________
PW 07 HR350Z R.I.P. Totaled by 82yr old woman
2010 40th Anniversary 370Z
lj909 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bypassing tpms Bigd4mcc Wheels & Tires 9 06-15-2015 06:08 PM
Stillen-Y Exhaust Pipe + AAM SHORT TAIL EXHAUST melodiesnrap Intake/Exhaust 2 06-30-2013 02:59 PM
Exhaust H Pipe vs. X Pipe: Difference? G Fo12ce Intake/Exhaust 10 08-20-2010 11:39 PM
X-pipe exhaust system....take a look, boombop shop exhaust genki370z Intake/Exhaust 2 07-03-2009 02:27 AM


All times are GMT -5. The time now is 04:39 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2