HiFlow Exhaust Manifold Crosspipe? - Subaru WRX Forum
 
LinkBack Thread Tools Display Modes
#1 Old 12-12-2007, 08:57 PM
WRXtuners Member
 
man show's Avatar
 
Join Date: Apr 2007
Location: Maryland
Posts: 3,147
Images: 2
man show is a WRX expert worth listening to man show is a WRX expert worth listening to man show is a WRX expert worth listening to
HiFlow Exhaust Manifold Crosspipe?

Everybody keeps talking about downpipes and uppipes and equal length headers, but I haven't heard much about hiflow exhaust manifold crosspipes. I stumbled across this website (http://www.grimmspeed.com/catalog/pr...roducts_id=106) and it looks like a pretty good piece of equipment to upgrade to. Anybody have any experience with one of these and at what point in the modding process should I start to think about this (if at all)?
man show is offline  
Sponsored Links
Advertisement
 
#2 Old 12-12-2007, 09:37 PM
WRXtuners Member
 
Kjott21's Avatar
 
Join Date: May 2006
Location: Pennsylvania
Posts: 763
Kjott21 is known to be trustworthy and helpful Kjott21 is known to be trustworthy and helpful Kjott21 is known to be trustworthy and helpful
Garage
An alternate option to getting a header is to port and polish the stock exhaust manifolds and replace the stock crossover with a high flow crossover. It shows good gains, costs less, and you don't lose the low end torque as much as with a header.

Grimmspeed is an awesome vendor. I had them do a P&P set of manifolds for me.

My name is Ken and I am a HP Junkie.
Kjott21 is offline  
#3 Old 12-12-2007, 09:57 PM
WRXtuners Member
 
Join Date: Dec 2007
Location: Texas
Posts: 19
wiked06rex is an unknown
Stock Manifold-Ported/Polished is better than stock cause it smoothes the air flow.

I may get flamed for this, but how many stock turbos hit 290+hp.EL Header's
with the right supporting mods are definitly the way to go.

They equal the exhaust pulses (which is better for fuel consumption,and hp) generaly they have larger exhaust tubing, and the collector is also larger.
You could loose some mid range but you can tune around that!!!
wiked06rex is offline  
#4 Old 12-13-2007, 07:44 AM
WRXpert
 
dumdum's Avatar
 
Join Date: Sep 2004
Location: Virginia
Posts: 2,800
Images: 12
dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention dumdum is a WRX tech God, pay attention
Both Injen and BPM make highflow crossover pipes.I have actually cut the stock on open to show the restriction in the bellows
http://forums.nasioc.com/forums/show...2&postcount=25

Homebrewed tuned with Opensource!
dumdum is offline  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On