Boost gauge

Discussion in 'Modifications & DIY how-to' started by wrxbacano, Mar 25, 2008.

  1. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    ok just installed a boost gauge and its reading 10lbs most of the time but it will get up to maybe 12lbs, the only mods I have on the car is a full 3" exhaust and intake, is this where the boost should be or could I have istalled the gauge incorrectly? and could I push a lil more boost? thanks for any input.
     
    #1 wrxbacano, Mar 25, 2008
  2. Davidwrx

    Davidwrx Member

    Joined:
    Apr 11, 2007
    Messages:
    375
    Likes Received:
    0
    I think stock boost is about 13 psi. As far as if you could increase it, tuning / EM could safely do it some. You said you had exhaust, but did not mention any EM - cobb or other. The Cobb stage 2 MAP goes to 15 psi or so.

    Keep in mind that the boost is dependent on RPM, throttle position, and also gear (I think you get highest in 3rd or 4th).
     
    #2 Davidwrx, Mar 25, 2008
  3. FRCFED4

    FRCFED4 Member

    Joined:
    Feb 10, 2008
    Messages:
    302
    Likes Received:
    0
    im cobb stage 2 and i see about 17 psi in 2nd and 3rd. i think 10 would be about right if u dont have EM
     
    #3 FRCFED4, Mar 25, 2008
  4. wrxin8or

    wrxin8or Mullitt
    Staff Member

    Joined:
    Feb 7, 2005
    Messages:
    4,190
    Likes Received:
    1
    reset your ecu, and see if that fixes it.

    IIRC, peak boost in first and second is 10lbs, then it should be 14ish in 3rd-5th
     
    #4 wrxin8or, Mar 25, 2008
  5. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    How can I reset the ecu?
     
    #5 wrxbacano, Mar 25, 2008
  6. Berzerklo

    Berzerklo Active Member

    Joined:
    May 21, 2007
    Messages:
    961
    Likes Received:
    0
    Unplug one of the leads on your battery for 5 minutes. Viola!
     
    #6 Berzerklo, Mar 25, 2008
  7. STiBottom

    STiBottom Member

    Joined:
    Dec 17, 2006
    Messages:
    272
    Likes Received:
    0
    No where near that long, unplug the battery, open your door, see dome light go off, presto it's reset.
     
    #7 STiBottom, Mar 25, 2008
  8. dontcallitarex

    dontcallitarex Active Member

    Joined:
    Sep 23, 2007
    Messages:
    1,443
    Likes Received:
    0
    Those boost levels sound about right. My car makes about the same. I can't tell exactly since my boost gauge is an OEM STI one and it reads in Bar. Stock max boost is quoted as "11.9." I think with a catback you'll make a little bit more. I know I spool faster and push a bit more boost with my 3" CBE.
     
    #8 dontcallitarex, Mar 25, 2008
  9. ScoobyMike

    ScoobyMike OG Mod

    Joined:
    Sep 24, 2004
    Messages:
    2,952
    Likes Received:
    0
    reset your ecu, and you should be fine.... full TBE and a intake should maybe raise your boost level maybe 1psi in 3rd-5th you should be hitting 13-high 14ish....
     
    #9 ScoobyMike, Mar 25, 2008
  10. FTZ

    FTZ ^.^

    Joined:
    Oct 10, 2004
    Messages:
    4,572
    Likes Received:
    1
    The Vishnu reset used to be, unplug - from battery, step on brake for about 5 seconds, done.
     
    #10 FTZ, Mar 25, 2008
  11. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    ok thanks for the input. But as far as the boost, can I raise it any, just wondering before I try anything stupid, cause I do have a MBC that Id luv to try out.
     
    #11 wrxbacano, Mar 26, 2008
  12. AK_Raptor

    AK_Raptor Member

    Joined:
    Dec 22, 2006
    Messages:
    501
    Likes Received:
    0
    Mbc=ftl
     
    #12 AK_Raptor, Mar 26, 2008
  13. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    ok ok im lost, ive been out of it for a while, MBC=manual boost control, right? whats ftl haha I feel dumn as F......! lol
     
    #13 wrxbacano, Mar 26, 2008
  14. AK_Raptor

    AK_Raptor Member

    Joined:
    Dec 22, 2006
    Messages:
    501
    Likes Received:
    0
    Manual Boost controller For The Lose=FTL
    They're just not a good idea
     
    #14 AK_Raptor, Mar 26, 2008
  15. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    oh ok.
     
    #15 wrxbacano, Mar 26, 2008
  16. dontcallitarex

    dontcallitarex Active Member

    Joined:
    Sep 23, 2007
    Messages:
    1,443
    Likes Received:
    0
    Yeah, upping the boost sounds like a great idea until something begins to smoke and subsequently explodes. You can't just increase boost, you have to change lots of other factors in the way the motor applies the boost. I'm sure Will or someone could tell you exactly why.

    But, in short, a MBC is like a Vorpal blade for your EJ.:thumbsdow
     
    #16 dontcallitarex, Mar 26, 2008
  17. wrxbacano

    wrxbacano Member

    Joined:
    Aug 23, 2005
    Messages:
    109
    Likes Received:
    0
    so I guess next step would be EM, or what would you guys recomend?
     
    #17 wrxbacano, Mar 27, 2008
  18. AK_Raptor

    AK_Raptor Member

    Joined:
    Dec 22, 2006
    Messages:
    501
    Likes Received:
    0
    Cobb AP
     
    #18 AK_Raptor, Mar 27, 2008
(You must log in or sign up to post here.)

Share This Page