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How much boost would a WRX STI run stock? 

13 replies to this topic

#1 N1_Ray

  • Joined:11-February 10
  • Location:Australia VIC
  • Car:R32 GTR

Posted 10 September 2010 - 02:27 PM

Hi people,

Just wanted some help :)

I wanted to know how much boost would a WRX STI run stock?

#2 Chich.

  • Joined:19-February 10
  • Location:Australia NSW
  • Car:S15 + Sileighty

Posted 10 September 2010 - 02:29 PM

between 14-15 psi i think.. correct me if i'm wrong...

#3 Tsuro

  • Joined:17-October 03
  • Location:Australia VIC
  • Car:1999 Subaru MY99 WRX, 1993 Nissan 180SX

Posted 10 September 2010 - 02:54 PM

Max 16psi but that's really pushing it.

Stick to around 14-15 psi

#4 N1_Ray

  • Joined:11-February 10
  • Location:Australia VIC
  • Car:R32 GTR

Posted 10 September 2010 - 03:11 PM

View PostTsuro, on 10 September 2010 - 02:54 PM, said:

Max 16psi but that's really pushing it.

Stick to around 14-15 psi


Thanks for the help! :)

#5 Club Spec

  • Joined:05-March 05
  • Location:Australia QLD
  • Car:WRX CS6

Posted 06 January 2011 - 05:09 AM

People on Rexnet run 18psi without hassles, but 16 is where most people stay. Just over 14 is stock.

#6 LIMIT_TECH_CAR_SHOP

  • Joined:21-January 07
  • Location:Australia VIC

Posted 18 March 2011 - 11:57 AM

18 PSI

#7 Wrexy

  • Joined:06-June 04
  • Location:Australia NSW
  • Car:Lexus IS250

Posted 19 March 2011 - 08:59 PM

18psi

#8 EpicRex

  • Joined:12-January 12
  • Location:Australia SA
  • Car:Impreza wrx

Posted 12 January 2012 - 09:44 PM

Correct me if I'm wrong but I got a stock wrx ecutek tune and its running 15psi at 4000-5000 rpm.. Connect my boost gauge directly to the empty nipple on my intake manifold.. How is that

#9 FINNY

  • Joined:20-September 06
  • Location:Australia SA
  • Car:S13, S15 & hilux

Posted 12 January 2012 - 10:46 PM

a stock 98-99 wrx runs just under 1 bar of boost which is around 14.5psi, so its normal enough

Edited by FINNY, 12 January 2012 - 10:46 PM.


#10 AC-S13

  • Joined:12-August 08
  • Location:Australia NSW
  • Car:1989 CA18 Sil

Posted 13 January 2012 - 08:32 AM

Soo much boost from factory for F*ck all power

#11 EpicRex

  • Joined:12-January 12
  • Location:Australia SA
  • Car:Impreza wrx

Posted 16 January 2012 - 12:58 PM

View PostACE-18E, on 13 January 2012 - 08:32 AM, said:

Soo much boost from factory for F*ck all power
yes u will get locked up

#12 Nathaniel Simeoni

  • Joined:23-January 13

Posted 27 January 2013 - 08:26 AM

Yep 14 to 15psi, and can run up too 18 safely and 20 ir your really lucky

#13 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 27 January 2013 - 08:38 AM

is there any real reason to bump up all these old threads?

#14 Chich.

  • Joined:19-February 10
  • Location:Australia NSW
  • Car:S15 + Sileighty

Posted 27 January 2013 - 03:30 PM

Because no look at date!





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