Page 1 of 2 12 LastLast
Results 1 to 10 of 17

Thread: Quick question on boost levels

  
  1. #1
    Status
    Offline
    Patrick's Avatar
    AOC Fanatic
    Join Date
    Aug 2003
    Posts
    945
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)

    Quick question on boost levels

    I'm running CS4 at the moment, do you think overboost of 23psi and 16psi holding is about right? I'm thinking it should be holding more boost so just wanted to check before I get it looked at.
    - 2004 Vauxhall Zafira GSi - Silver, work in progress..
    - 2003 BMW 325ti M Sport - Silver, 18" CSL wheels in matt anthracite, Eibachs, Full red leather

  2. #2
    Status
    Offline
    bgasmatt's Avatar
    AOC Obsessed
    Join Date
    Apr 2009
    Posts
    1,200
    Mentioned in
    1 Post(s)
    Quoted
    1 Post(s)
    what is your exhaust situation straigh through etc.

  3. #3
    Status
    Offline
    bgasmatt's Avatar
    AOC Obsessed
    Join Date
    Apr 2009
    Posts
    1,200
    Mentioned in
    1 Post(s)
    Quoted
    1 Post(s)
    also ur power seems very low for cs4.

  4. #4
    Status
    Offline
    881thomas's Avatar
    AOC Regular
    Join Date
    Apr 2006
    Posts
    281
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    power should be around the 285 mark minimum!

  5. #5
    Status
    Offline
    Patrick's Avatar
    AOC Fanatic
    Join Date
    Aug 2003
    Posts
    945
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    I've posted another thread about that in the Zafira forum. Sh1te Powerflow exhaust with a lot of restrictions. Booked in at Courtenay soon for a Milltek. Just wanting to know really whether I should be holding more than 16psi, because if so will ask them to look at that as well.
    - 2004 Vauxhall Zafira GSi - Silver, work in progress..
    - 2003 BMW 325ti M Sport - Silver, 18" CSL wheels in matt anthracite, Eibachs, Full red leather

  6. #6
    Status
    Offline
    Patrick's Avatar
    AOC Fanatic
    Join Date
    Aug 2003
    Posts
    945
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by 881thomas View Post
    power should be around the 285 mark minimum!
    I'm hoping for somewhere around 290-300 once the issues have been sorted.
    - 2004 Vauxhall Zafira GSi - Silver, work in progress..
    - 2003 BMW 325ti M Sport - Silver, 18" CSL wheels in matt anthracite, Eibachs, Full red leather

  7. #7
    Status
    Offline
    bgasmatt's Avatar
    AOC Obsessed
    Join Date
    Apr 2009
    Posts
    1,200
    Mentioned in
    1 Post(s)
    Quoted
    1 Post(s)
    surley a retrictive exhaust will make it hold higher boost more free flowing will make holding boos lower mate.

  8. #8
    Status
    Offline
    montyfox's Avatar
    AOC Obsessed
    Join Date
    Apr 2006
    Posts
    7,434
    Mentioned in
    1 Post(s)
    Quoted
    1 Post(s)
    Quote Originally Posted by 881thomas View Post
    power should be around the 285 mark minimum!

    All depends on which rollers you go on really!

    Go on rollers that read 5% higher than actual, then go on another set that read 5% low, thats 10% difference between the 2. On a 280Bhp engine, thats best part of 30Bhp!

  9. #9
    Status
    Offline
    bgasmatt's Avatar
    AOC Obsessed
    Join Date
    Apr 2009
    Posts
    1,200
    Mentioned in
    1 Post(s)
    Quoted
    1 Post(s)
    indeed rollers are a lottory hence why you should always use the same rollers to get a propper comparison but no doubt the figures he has were done at courtney and they stat a lot more than he has on there rollers for that level.

  10. #10
    Status
    Offline
    KevT.'s Avatar
    Yorkshire RO
    Join Date
    Jul 2005
    Location
    Bradford
    Posts
    9,218
    Mentioned in
    7 Post(s)
    Quoted
    15 Post(s)
    for CS4 the actuator is set to hold at 16psi

    AOC top 15 car at PVS 2009 & 2010
    313.7bhp/343Ibft


Page 1 of 2 12 LastLast

Similar Threads

  1. CS4 boost levels
    By Danwileman in forum Turbo Petrol Engines inc. Transmissions
    Replies: 2
    Last Post: 13-11-2008, 20:52
  2. Quick Boost gauge question... (plumbing in)
    By RobW in forum Turbo Petrol Engines inc. Transmissions
    Replies: 1
    Last Post: 22-04-2007, 20:29

Posting Permissions

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