Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

How to get more HP/TQ up top on Evo 9 Turbo

Thread Tools
 
Search this Thread
 
Old Jan 21, 2012, 03:47 PM
  #16  
Evolved Member
iTrader: (25)
 
Svendiesel's Avatar
 
Join Date: Jun 2009
Location: Teh internets.
Posts: 1,730
Likes: 0
Received 3 Likes on 3 Posts
^can't read? Lol
Old Jan 21, 2012, 03:50 PM
  #17  
Evolved Member
iTrader: (18)
 
4g63evoeight's Avatar
 
Join Date: Oct 2008
Location: Albany NY
Posts: 1,109
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Svendiesel
^can't read? Lol
just scrolled thru it quick mustve missed it
Old Jan 21, 2012, 06:43 PM
  #18  
Evolved Member
Thread Starter
iTrader: (9)
 
TheBoz's Avatar
 
Join Date: Jan 2005
Location: Space time
Posts: 1,278
Received 14 Likes on 13 Posts
Originally Posted by triple L
go fp green!!
Trying to get to the 10's on the stock turbo .
Old Jan 21, 2012, 06:45 PM
  #19  
Evolved Member
Thread Starter
iTrader: (9)
 
TheBoz's Avatar
 
Join Date: Jan 2005
Location: Space time
Posts: 1,278
Received 14 Likes on 13 Posts
I will try to get the boost up in the top, however when running on the stock cams I saw almost no gains from the extra boost up in the top.

I think the only thing left to do is a ported TB, and mabye a bigger exhaust, and tublar mani.
Old Jan 21, 2012, 06:56 PM
  #20  
Evolved Member
iTrader: (25)
 
Svendiesel's Avatar
 
Join Date: Jun 2009
Location: Teh internets.
Posts: 1,730
Likes: 0
Received 3 Likes on 3 Posts
Throttle body in this case isn't going to do a ton since you're fighting back pressure like I said. Adding boost isn't going to help you're going to get more low end torque but top end will probably suffer more. You need to free you exhaust flow to help efficiency.
Old Jan 21, 2012, 07:02 PM
  #21  
Evolved Member
iTrader: (18)
 
fromWRXtoEVO's Avatar
 
Join Date: Sep 2004
Location: Tucson
Posts: 6,087
Likes: 0
Received 4 Likes on 4 Posts
I don't see an intercooler on your list, nor a Intake manifold. There are little things that can still free up more HP like pulleys and lighter rotors, even lighter rims.

As far is everything else, you are very much almost at 100% of where you want to be. You might be able to get a little more power with a intercooler chiller.

Carlos
Old Jan 21, 2012, 07:16 PM
  #22  
Evolved Member
Thread Starter
iTrader: (9)
 
TheBoz's Avatar
 
Join Date: Jan 2005
Location: Space time
Posts: 1,278
Received 14 Likes on 13 Posts
Oops

I have an ETS 3.5 FMIC, and MAP Rev 2 IM.
Old Jan 21, 2012, 07:39 PM
  #23  
Evolving Member
iTrader: (18)
 
bostonhatcher's Avatar
 
Join Date: Apr 2007
Location: Mid-Missouri
Posts: 272
Likes: 0
Received 1 Like on 1 Post
I've always wanted to dyno test a tubular manifold with a 44mm external wastegate before the turbine housing to free up backpressure.
Old Jan 21, 2012, 08:11 PM
  #24  
Evolved Member
iTrader: (30)
 
project_skyline's Avatar
 
Join Date: Jun 2007
Location: Colorado
Posts: 2,532
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Svendiesel
You need to free up some back pressure to pick up power up top. Going to a 3.5" exhaust would help.
I very highly doubt that would even do anything with a 9 turbo. I think you'd be hard pressed to find a lot of back pressure on a 3inch exhaust with a small turbo like that.
Old Jan 21, 2012, 08:36 PM
  #25  
Evolved Member
iTrader: (25)
 
Svendiesel's Avatar
 
Join Date: Jun 2009
Location: Teh internets.
Posts: 1,730
Likes: 0
Received 3 Likes on 3 Posts
I'm not saying there's an epic amount of back pressure. But any form of back pressure on a turbo car is lost top end.

But yes, I'm sure the size of the exhaust wheel ultimately is the issue.

Last edited by Svendiesel; Jan 21, 2012 at 08:39 PM.
Old Jan 22, 2012, 11:47 AM
  #26  
Evolved Member
iTrader: (6)
 
kouzman's Avatar
 
Join Date: Sep 2005
Location: NYC
Posts: 2,269
Likes: 0
Received 0 Likes on 0 Posts
Your best bet is to play with cam timing. It will next next to impossible to keep boost high near 8000rpm...

Ohh you could not run a wastegate at all... I am not sure what it will overboost... This way you will be running the max that the turbo can produce in all rpms
Old Jan 22, 2012, 12:06 PM
  #27  
Evolved Member
iTrader: (25)
 
Svendiesel's Avatar
 
Join Date: Jun 2009
Location: Teh internets.
Posts: 1,730
Likes: 0
Received 3 Likes on 3 Posts
I personally dont like EBC's/ECU controlled boost, but a well set-up EBC can help regulate boost per gear better than a MBC can also. That may help as well.

Edit: Oops I cant read also, you have an EBC
Old Jan 22, 2012, 12:19 PM
  #28  
Evolved Member
Thread Starter
iTrader: (9)
 
TheBoz's Avatar
 
Join Date: Jan 2005
Location: Space time
Posts: 1,278
Received 14 Likes on 13 Posts
Currently I am running MBC, however I am going to switch to EBC+MBC Hybrid setup.

First order of business it to get the torque a little lower at peek torque, and maybe turn the boost up. Then I should be able to hold more boost up in the top.

It might also be time to put some slicks on the evo.
Old Jan 22, 2012, 12:41 PM
  #29  
Evolved Member
iTrader: (44)
 
Blue91lx's Avatar
 
Join Date: Aug 2011
Location: Philadelphia, PA
Posts: 2,154
Likes: 0
Received 5 Likes on 4 Posts
Originally Posted by project_skyline
I very highly doubt that would even do anything with a 9 turbo. I think you'd be hard pressed to find a lot of back pressure on a 3inch exhaust with a small turbo like that.
If he has a dump and wants top end (where the wastegate is open), I wonder how much backpressure is really fighting him in the upper rpm range?
Old Jan 22, 2012, 12:52 PM
  #30  
Newbie
 
HHIX's Avatar
 
Join Date: May 2010
Location: Germany
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Are you running the stock cat ? if yes switch to a high flow metal one or a test pipe


edit : have read again ... you got a test pipe .....


Quick Reply: How to get more HP/TQ up top on Evo 9 Turbo



All times are GMT -7. The time now is 06:16 AM.