Results 1 to 2 of 2

Thread: No Boost

  1. #1
    Junior Member
    Join Date
    Aug 2007

    Default No Boost

    I'm new to forced induction engines. I have recently lost all boost to my engine. I'm running a powerdyne 6psi system and in data logging I can't get any readings over 100kpa, it used to peg the gauge before. I suspect it is the bypass valve from what I have read, I have the old style plastic bosch valve and can't find the exact replacment to try that route. Also the meth injection system is not working because it is not getting the booost signal to activate it. I used an air compressor to test the meth switch (set at 3psi) and the fuel regulator and both did activate with pressure from the compressor. I could really use any help offered to trouble shoot this problem. Could the belt inside the head unit be broken? All other readings are normal and no trouble codes set. The car is not running very well compared to how it used to run. It is a stock 99 Camaro Z/28 w/ powerdyne 6 psi kit, meth injection, and magnaflow exhaust and of course EFI Live tuning done by myself.

    Thank You,

  2. #2
    EFILive Reseller kbracing96's Avatar
    Join Date
    Sep 2005


    Sounds like you broke the internal belt to me. Pull the air inlet tube off and see if you can spin the impeller by hand. If you can, then the belt is broken. You can also take the drive belt off and spin the pulley and see if it spins the impeller.
    01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC

    Custom KBracing front mounted, BW S480, intercooled turbo

Similar Threads

  1. What AFR in Boost?
    By zapp168 in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 6
    Last Post: July 24th, 2007, 12:03 AM
  2. Use MAF for off boost/2 Bar SD when in boost
    By Earl H in forum Forced Induction and Nitrous Oxide (N20)
    Replies: 26
    Last Post: May 24th, 2007, 11:58 AM
  3. Boost and EGT's
    By minytrker in forum Duramax LB7
    Replies: 5
    Last Post: February 14th, 2007, 02:41 AM
  4. Can you log boost?
    By AustinL911A in forum General
    Replies: 9
    Last Post: January 5th, 2006, 06:55 AM
  5. What happens when you go into boost?
    By hpcubed in forum General (Petrol, Gas, Ethanol)
    Replies: 18
    Last Post: March 29th, 2005, 04:49 PM

Posting Permissions

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