Boost gauge needle
Results 1 to 11 of 11

This is a discussion on Boost gauge needle within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Guys, Where should the needle of the Lamco boost gauge be while the engine is off? Mine sit on -.01...

  1. #1
    Registered User knfevg's Avatar
    Join Date
    May 2009
    Location
    Israel
    Posts
    52

    Boost gauge needle

    Guys,
    Where should the needle of the Lamco boost gauge be while the engine is off? Mine sit on -.01
    Thanks,
    Evgeny

    Subaru Impreza WRX STi ProDrive 2.0 MT6 2003
    Mazda 6 2.0 AT 2008

  2. Remove Advertisements
    ClubWRX.net
    Advertisements
     

  3. #2
    UnBanned Sinister's Avatar
    Join Date
    Nov 2006
    Location
    Denver Metro Area
    Posts
    17,548
    I Support ClubWRX
    Quote Originally Posted by knfevg View Post
    Guys,
    Where should the needle of the Lamco boost gauge be while the engine is off? Mine sit on -.01
    it should be at 0.

    -.01 is pretty damned good. Mine is at .1, and I consider it accurate (it's coming from the MAP sensor that the ECU reads..)
    Kevin
    Moderator
    Sinister's Blowoff Valve FAQ
    WRX Gas Mileage FAQ
    Sinister's Progress Thread - 430whp 429wtq - Sold
    Firearms Enthusiasts Thread

    The Sheriff's Star at the bottom left corner rates a user's reputation.
    If you found a user's post to be helpful or quite the opposite, please make it known to them by clicking the Star!

  4. #3
    Banned
    Join Date
    Dec 2003
    Location
    Dallas, TX / Sterling, VA
    Posts
    6,629
    I Support ClubWRX
    Quote Originally Posted by Sinister View Post
    it should be at 0.

    -.01 is pretty damned good. Mine is at .1, and I consider it accurate (it's coming from the MAP sensor that the ECU reads..)
    The Lamco reads in MPa.

  5. #4
    Registered User knfevg's Avatar
    Join Date
    May 2009
    Location
    Israel
    Posts
    52
    Indeed, it's MPa.
    So, does -.01 is OK?
    BTW, the reading doesnt come from the MAP sensor, but from a hose that is connected to the intake manifold through a T connector
    Thanks,
    Evgeny

    Subaru Impreza WRX STi ProDrive 2.0 MT6 2003
    Mazda 6 2.0 AT 2008

  6. #5
    UnBanned Sinister's Avatar
    Join Date
    Nov 2006
    Location
    Denver Metro Area
    Posts
    17,548
    I Support ClubWRX
    -.01mPa converts to -1.45psi... Not horribly off but enough to raise an eyebrow. If you're at altitude this is a common problem... What's the elevation where you live?
    Kevin
    Moderator
    Sinister's Blowoff Valve FAQ
    WRX Gas Mileage FAQ
    Sinister's Progress Thread - 430whp 429wtq - Sold
    Firearms Enthusiasts Thread

    The Sheriff's Star at the bottom left corner rates a user's reputation.
    If you found a user's post to be helpful or quite the opposite, please make it known to them by clicking the Star!

  7. #6
    Registered User knfevg's Avatar
    Join Date
    May 2009
    Location
    Israel
    Posts
    52
    1 mile from a sea shore I would say around 100ft....
    Thanks,
    Evgeny

    Subaru Impreza WRX STi ProDrive 2.0 MT6 2003
    Mazda 6 2.0 AT 2008

  8. #7
    Registered User Silversubie05's Avatar
    Join Date
    Aug 2009
    Location
    Tri-Cities, WA
    Posts
    33
    Mine sits at -.01 when its off, I'm about 700 ft above sea level. I was reading that .09 is about 13.5 psi which is supposedly what the wrx wastegate is set to stock. At full boost my car only gets to .08, I was wondering the other day if thats just because my gauge is .01 off or if I'm not actually getting to target boost?

  9. #8
    UnBanned Sinister's Avatar
    Join Date
    Nov 2006
    Location
    Denver Metro Area
    Posts
    17,548
    I Support ClubWRX
    Quote Originally Posted by Silversubie05 View Post
    Mine sits at -.01 when its off, I'm about 700 ft above sea level. I was reading that .09 is about 13.5 psi which is supposedly what the wrx wastegate is set to stock. At full boost my car only gets to .08, I was wondering the other day if thats just because my gauge is .01 off or if I'm not actually getting to target boost?
    The needle is probably off. This is the reason why I'm only interested in digital gauges.
    Kevin
    Moderator
    Sinister's Blowoff Valve FAQ
    WRX Gas Mileage FAQ
    Sinister's Progress Thread - 430whp 429wtq - Sold
    Firearms Enthusiasts Thread

    The Sheriff's Star at the bottom left corner rates a user's reputation.
    If you found a user's post to be helpful or quite the opposite, please make it known to them by clicking the Star!

  10. #9
    UnBanned Sinister's Avatar
    Join Date
    Nov 2006
    Location
    Denver Metro Area
    Posts
    17,548
    I Support ClubWRX
    Quote Originally Posted by knfevg View Post
    1 mile from a sea shore I would say around 100ft....
    Lol... sounds fun!

    So it's not altitude... have you checked to see how accurate it is against the ECU?
    Kevin
    Moderator
    Sinister's Blowoff Valve FAQ
    WRX Gas Mileage FAQ
    Sinister's Progress Thread - 430whp 429wtq - Sold
    Firearms Enthusiasts Thread

    The Sheriff's Star at the bottom left corner rates a user's reputation.
    If you found a user's post to be helpful or quite the opposite, please make it known to them by clicking the Star!

  11. #10
    Registered User knfevg's Avatar
    Join Date
    May 2009
    Location
    Israel
    Posts
    52
    Quote Originally Posted by Sinister View Post
    Lol... sounds fun!

    So it's not altitude... have you checked to see how accurate it is against the ECU?
    As you can see from a different thread, I'm looking to buy a cable to do some ECU reading.
    Thanks,
    Evgeny

    Subaru Impreza WRX STi ProDrive 2.0 MT6 2003
    Mazda 6 2.0 AT 2008

  12. #11
    Registered User knfevg's Avatar
    Join Date
    May 2009
    Location
    Israel
    Posts
    52
    Ok, I removed the gauge from the dash (I have the 3 units installed in the dash bellow the radio) and fixed the needle to be on 0. Tomorrow will see how it works.
    If I decide to get a new set of gauges, what are my options? Any digital ALL-IN-ONE units that works like the PSI3?
    Thanks,
    Evgeny

    Subaru Impreza WRX STi ProDrive 2.0 MT6 2003
    Mazda 6 2.0 AT 2008

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •