Results 1 to 5 of 5

Thread: slight prob with boost ?

  
  1. #1
    Status
    Offline
    gsi-jay's Avatar
    AOC Obsessed
    Join Date
    May 2006
    Posts
    2,049
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)

    slight prob with boost ?

    hi all have a slight prob so just after some ideas really

    zafira gsi courtneys stage 3 re map been running fine until lately when boost gets to around 10 psi it really holds back dont seem to miss just falls into a hole can here there obviously boost pressure there but as if either lack of fuel or spark but as i said it aint missing,when keep foot down it will boost as normal upto 20 ish psi and hold back then boost drops off and it ok up to 10 ish psi again and sometimes it will just drop power totally as if cuts for a split second , no engine light on have changed amm im thinking possibly plugs as has irridiums in there for around 6 thou miles thinkng maybe gap closed up or just need replacing but open to idears
    courtney stage 3 zafira,Mitsubishi evo geek mapped to 389 and 470 lb of torque

  2. #2
    Status
    Offline
    inmyvain's Avatar
    AOC Obsessed
    Join Date
    May 2006
    Posts
    3,705
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    u running oe dump valve/actuator?

  3. #3
    Status
    Offline
    gsi-jay's Avatar
    AOC Obsessed
    Join Date
    May 2006
    Posts
    2,049
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    no dump valve and a uprated courtneys actuator
    courtney stage 3 zafira,Mitsubishi evo geek mapped to 389 and 470 lb of torque

  4. #4
    Status
    Offline
    gsi-jay's Avatar
    AOC Obsessed
    Join Date
    May 2006
    Posts
    2,049
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    right changed plugs to cosworth plugs and still the same so any more thoughts
    courtney stage 3 zafira,Mitsubishi evo geek mapped to 389 and 470 lb of torque

  5. #5
    Status
    Offline
    inmyvain's Avatar
    AOC Obsessed
    Join Date
    May 2006
    Posts
    3,705
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    best bet would be to get it on the rollers and test it out see whats happening

Similar Threads

  1. Slight hesitation before boost
    By Deano82 in forum Diesel Engines inc. Transmissions
    Replies: 2
    Last Post: 08-11-2010, 13:21

Posting Permissions

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