troubleshooting boost issue with a greddy profec b spec 2

Discussion in 'Technical' started by attila.Z, May 14, 2013.

  1. attila.Z

    attila.Z Awesome member

    So i had a greddy profec b spec 2 set up last year. Ran perfectly, excellent boost set at 15psi.

    Then one day my car wouldn't boost past 7psi (safety boost level). I thought it was a leak and checked everything to no avail.

    Last resort was to buy a $15 eBay boost tee to rule out the controller.
    I removed the solenoid, but kept the profec unit setup in car reading boost levels. The little eBay sucker worked!

    That was 6 months ago. Now I'm a bit sick of having this temperemental junkie eBay controller in that pulls a ghetto spike whenever it feels like it, and coughs and spits all over the place when I put my foot down. For $15 its great, but its a lucky dip every time you accelerate.

    Time to sort out the profec and get it back on track.


    Any ideas what could cause safety boost problems with the ebc?


    Tomorrow I will check power wire gets 12v, earth is earthed, no hose leaks from solenoid to unit. Is it likely to be a solenoid issue or the head unit electrics?
     
  2. East Coast Z

    East Coast Z Well-Known Member

    First step:
    Read the owners manual, then recheck the installation & setup.
    It's possible the unit itself could be defective, but you need to verify installation & setup are correct.
     
  3. attila.Z

    attila.Z Awesome member

    It worked perfectly for 6 months though then suddenly died?
     
  4. GTP_VLBT1

    GTP_VLBT1 CAIRNS - Z- MAN

    are you sure the solenoid itself hasnt died?
     
  5. Anti

    Anti 14.7 x 14.7 = 44.1

    Attilla, you're welcome to come by and grab my profec solenoid to troubleshoot. it's just sitting on my shelf, you can hang on to it 'til you find a replacement if it's the issue.
     

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