Max. safe boost & expected HP - Subaru WRX Forum
 
LinkBack Thread Tools Display Modes
#1 Old 02-03-2003, 08:56 PM
WRXtuners Member
 
Join Date: Feb 2003
Location: Abingdon, Maryland
Posts: 2
Dsmified is an unknown
Max. safe boost & expected HP

My friend was wondering that if he turned the boost up on his stock turbo on a 2002 WRX sedan, say about 15-17 psi, what kind of HP increase he could expect. I told him maybe 20-30 hp, but I really dunno.

-Andrew
Dsmified is offline  
Sponsored Links
Advertisement
 
#2 Old 02-04-2003, 01:21 AM
WRXtuners Member
 
Join Date: Jan 2003
Location: Washington
Posts: 14
wrxwannabe is an unknown
well...the way i've heard by some people, is add on about 7-8 HP per pound of boost added.
wrxwannabe is offline  
#3 Old 02-05-2003, 09:22 PM
WRXtuners Member
 
Join Date: Jan 2003
Location: Tulsa, Oklahoma
Posts: 130
Mattr762 is an unknown
This is from ScoobySport website:
Quote:
NOTE: We caution against making a boost controller your first modification, as we literally service one engine per week in the UK that has been ruined by boosting without proper engine management. In fact, if a customer insists on an adjustable boost controller, we ask when they want to make an appointment for the engine rebuild...

Use it or lose it!
Mattr762 is offline  
#4 Old 02-16-2003, 11:30 AM
WRXtuners Member
 
Join Date: Jan 2003
Location: hendersonville,nc
Posts: 7
Bubba is an unknown
Send a message via AIM to Bubba
its very safe to alter stock boost levels with just a good boost gauge an egt gauge, a manual controller and basic tuning knowledge. 15-16 psi is probably all you want with stock fuel system and pump gas.
Bubba is offline  
#5 Old 02-18-2003, 12:20 AM
WRXtuners Member
 
WjRgX's Avatar
 
Join Date: Dec 2002
Location: Montana
Posts: 56
Images: 8
WjRgX is an unknown
Send a message via AIM to WjRgX
16 to 17 is what I will be doing but just turning it on at the track, my every day setting will sit 14 to 15, for every pound of pressure I believe is a 15 bhp gain. If you have a factory boost guage .11 I believe is around 16 PSI, but I am checking on that now, so I will reply again if I am wrong.
WjRgX is offline  
#6 Old 02-18-2003, 12:28 AM
WRXtuners Member
 
Join Date: Jan 2003
Location: Tulsa, Oklahoma
Posts: 130
Mattr762 is an unknown
Quote:
for every pound of pressure I believe is a 15 bhp gain
I thought is was 8bhp. Not real sure though.

Use it or lose it!
Mattr762 is offline  
#7 Old 02-23-2003, 05:37 PM
WRXtuners Member
 
Join Date: Feb 2003
Location: New Jersey
Posts: 58
IMPREZvWRX is an unknown
Send a message via AIM to IMPREZvWRX
After doing some datalogging, many WRX owners have noticed the factory ECM pulling timing after ~ 15.5-16 psi, which nullifies any gain you might have made from the high boost. I also suggest using spark plugs that are one heat rhange cooler then stock to minimize any detination/misfire. A great plug to use is NGK BKR7EVX-11. I've been using these for about 20,000 miles with great results.

Chris
IMPREZvWRX 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