Perth-WRX.com  

Go Back   Perth-WRX.com > Technical > Mechanicals
Register Diddy Kart ArticlesAll AlbumsBlogs FAQ Members List Calendar Search Today's Posts Mark Forums Read


Welcome to Perth-WRX, click here to register!

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 20-09-2005, 10:35 AM
TopGear's Avatar
Subaru Tech Division
Member
 
Join Date: Aug 2005
Location: Perth
Posts: 1,334
Thanks: 1
Thanked 0 Times in 0 Posts
TopGear at standard level
Default Upping The Boost

I was wondering how much i can up the boost with standard computer in a MY00 and not have any problems, also when does boost/fuel cut come in??
Reply With Quote
  #2  
Old 20-09-2005, 10:37 AM
Andy's Avatar
STI Master
 
Join Date: Jul 2004
Location: Eastern Europe
Posts: 715
Thanks: 1
Thanked 5 Times in 4 Posts
Andy at standard level
Send a message via MSN to Andy
Default

67psi.............
__________________
Wand basics:
One must brake with the left hand and steer with the right foot.
Having Defi's does not make Racecar..
Reply With Quote
  #3  
Old 20-09-2005, 10:37 AM
tuna's Avatar
Sign me up!
Why stop at two bar?
 
Join Date: Jul 2005
Location: Where horsepower is cool again.
Posts: 5,570
Blog Entries: 5
Thanks: 7
Thanked 107 Times in 50 Posts
tuna is a gurutuna is a guru
Default

1.3 is very common, or 1.4/1.5 if you want a bit more kick

with a boost controller, u can dialout the boost cut.
stock boost cut hits at 1.1-1.2 bar depending on how sensitive it is at the time
__________________

Long live the WRC
Reply With Quote
  #4  
Old 20-09-2005, 10:44 AM
TopGear's Avatar
Subaru Tech Division
Member
 
Join Date: Aug 2005
Location: Perth
Posts: 1,334
Thanks: 1
Thanked 0 Times in 0 Posts
TopGear at standard level
Default

no wonder you knockin at 3500rpm andy
Reply With Quote
  #5  
Old 20-09-2005, 10:58 AM
alcw's Avatar
DCCD Donut Driver
Member
 
Join Date: Jul 2005
Location: Perth
Posts: 126
Thanks: 0
Thanked 0 Times in 0 Posts
alcw at standard level
Default

odd.. i hit boost cut often
1.3, and Im running a boost controller
__________________
Andrew

2008 Ferrari F430 Scuderia
2013 Audi A6 Hybrid
2013 Toyota Vellfire
Reply With Quote
  #6  
Old 20-09-2005, 11:58 AM
DAN682's Avatar
Sign me up!
Nazi Sled Driver
 
Join Date: Jul 2005
Location: Mandurah
Posts: 2,364
Thanks: 25
Thanked 13 Times in 9 Posts
DAN682 at standard level
Send a message via ICQ to DAN682 Send a message via MSN to DAN682 Send a message via Yahoo to DAN682
Default

Quote:
Originally Posted by Andy
67psi.............
is that all?

Reply With Quote
  #7  
Old 21-09-2005, 11:57 AM
Wet & Messy
Member
 
Join Date: Jul 2005
Location: perth
Posts: 251
Thanks: 0
Thanked 0 Times in 0 Posts
slugwrx at standard level
Default

easy to get rid of boost/fuel cut...windscreen washer restrictor/1 way valve tee'd from std boost solenoid...run 1.4 bar then if u wish
Reply With Quote
  #8  
Old 21-09-2005, 12:09 PM
Andy's Avatar
STI Master
 
Join Date: Jul 2004
Location: Eastern Europe
Posts: 715
Thanks: 1
Thanked 5 Times in 4 Posts
Andy at standard level
Send a message via MSN to Andy
Default

Quote:
Originally Posted by DAN682
is that all?


trucks do it, why cant we
__________________
Wand basics:
One must brake with the left hand and steer with the right foot.
Having Defi's does not make Racecar..
Reply With Quote
  #9  
Old 21-09-2005, 10:28 PM
Sir AntiLag
Member
 
Join Date: Jul 2005
Location: Perth
Posts: 352
Thanks: 0
Thanked 0 Times in 0 Posts
geoff at standard level
Default

Quote:
Originally Posted by slugwrx
easy to get rid of boost/fuel cut...windscreen washer restrictor/1 way valve tee'd from std boost solenoid...run 1.4 bar then if u wish
That's really clever!

I thought about it, and i worked out to do it really neatly, you'd need two tee pieces and a pair of check valves. That way the most that the MAP sensor would see is about 50kpa of boost (half a bar, 7psi) - but it'd still see a full vacuum signal when there's no boost present, and it'd still be able to sense atmospheric pressure.

The solution I came up with is

- Run a tee from the diaphragm line on the other side of the restrictor
- Check valve so that positive pressure only comes out
- Tee it in before the line to the 3-port solenoid input
- Add a check valve so that only vacuum comes from the manifold

Incredibly difficult to describe, so i present for you this very bad diagram:



Would that work - am i right? As far as i can tell, that ought to let you run a lot more than factory boost, and if you added a variable restrictor, you'd get it up to 1.5 bar easily.
Reply With Quote
  #10  
Old 22-09-2005, 09:18 PM
matto20v's Avatar
STI Master
Member
 
Join Date: Jul 2005
Location: Perth
Posts: 948
Thanks: 38
Thanked 36 Times in 33 Posts
matto20v at standard level
Default

the only possible prob is the MY00 runs AFM, not MAP
Reply With Quote
Reply

Tags
boost, upping

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




Welcome to Perth-WRX, click here to register!

All times are GMT +8. The time now is 12:49 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO