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Link G4 Breakup at WOT

Posted by lglracer, Feb 14, 2020

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  1. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    Hello Everyone,
    Im trying to figure out what my issue is with my car. At wide open throttle I am at .85 Lambda on E85. Im getting some really bad break up. Boost level is stock. Breakup is around 4500-5k. I attached a log. Car profile is up to date. any more questions just ask away.
     

    Attached Files:

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  2. Taylor4ghindman

    Taylor4ghindman Probationary Member

    15
    0
    Joined Nov 21, 2019
    Warrenton, Missouri
    On my phone currently so I cant really look at the log. But what is your current setup ?
     

    Street Build 101  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  3. Vegas smith

    Vegas smith Proven Member

    2,925
    1,466
    Joined Dec 2, 2002
    Houston, Texas
    I can't view the log either but 4-5k is around max torque/boost and in my experience that could be a spark plug gap issue.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
    silvreclips likes this.
  4. Taylor4ghindman

    Taylor4ghindman Probationary Member

    15
    0
    Joined Nov 21, 2019
    Warrenton, Missouri
    That's my thought exactly but at such low boost pressure idk.
     

    Street Build 101  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  5. Taylor4ghindman

    Taylor4ghindman Probationary Member

    15
    0
    Joined Nov 21, 2019
    Warrenton, Missouri
    What's .85 on E85 in afr ? Could be to rich
     

    Street Build 101  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  6. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    4,896
    2,225
    Joined Nov 14, 2013
    Independence, Kansas
    From Innovates website:
    "Lambda, which is a Greek letter demonstrated by the symbol λ, represents all fuel’s stoichiometric value as 1.00. Lean conditions would represent a value higher than 1.00, and rich conditions are lower. These lean (higher) and rich (lower) values are calculated for the Lambda scale by dividing the observed A/F ratio with that particular fuel’s stoich. For example: a 12.8:1 observed reading with gasoline is divided by 14.7 to produce a .87 Lambda reading."
    So it appears to be LEAN to me if it is anywhere close to 12.8:1 at WOT.
     

    Street Build 4K  28

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    761  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    552  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 779  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
    lglracer and Taylor4ghindman like this.
  7. Vegas smith

    Vegas smith Proven Member

    2,925
    1,466
    Joined Dec 2, 2002
    Houston, Texas
    Ahh, I didn't see that.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
    lglracer and Taylor4ghindman like this.
  8. Taylor4ghindman

    Taylor4ghindman Probationary Member

    15
    0
    Joined Nov 21, 2019
    Warrenton, Missouri
    Vegas Smith thank you for the education on lambda.
    But to the OP what plugs are you using and at what gap?
     

    Street Build 101  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  9. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    - Plugs are BPR7 @.22 gap.
    - .85lambda is around 12.5 AFR in 91. for E85 thats about 8.3 AFR
    - Boost is around 12-14psi
     
    Last edited: Feb 14, 2020

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  10. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    upload_2020-2-14_14-10-40.png


    Here is a picture of the log. This is right before it starts to break up. my only idea is to switch the COP setup to the factory coil pack and wires and see if that fixes it. Maybe there is something wring with my ARC-2?
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  11. Vegas smith

    Vegas smith Proven Member

    2,925
    1,466
    Joined Dec 2, 2002
    Houston, Texas
    I think that's a good idea. My COP was very finicky at first. It was always breaking up and I almost gave up on it until I perfected the length of the spring/boot and really protected my wiring from grounding out.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  12. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    Did you cut the springs? My springs are not cut. I only cut the boots if I remember correctly.
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  13. Vegas smith

    Vegas smith Proven Member

    2,925
    1,466
    Joined Dec 2, 2002
    Houston, Texas
    It depends on which COP plate you use. I used the Frontline-Fab plate that places the coils at a different elevation and that forced me to have to cut the springs. I also used dielectric grease on the ceramic portion of the plugs to reduce grounding.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  14. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    I'm using a JMF plate. I will have to take it off and see. I don't have any dielectric grease on them. I will have to try that.
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  15. motomattx

    motomattx Proven Member

    2,158
    808
    Joined Dec 9, 2010
    wampum, Pennsylvania
    If you want to post up your tune I can look at it, are you running modeled fuel setup?
     

    Drag Race Build 3K  24

    1995 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
  16. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    I will post in a bit. Hopefully it will let me. I had to have @Ludachris setup the site to accept them
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  17. motomattx

    motomattx Proven Member

    2,158
    808
    Joined Dec 9, 2010
    wampum, Pennsylvania
    Modeled mode or traditional?, sometimes its good to start of as simple as possible, even running Alpha-N if needed.
     

    Drag Race Build 3K  24

    1995 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
  18. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    Fuel is Tradition with Stoich at 9.8AFR
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
  19. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    4,896
    2,225
    Joined Nov 14, 2013
    Independence, Kansas
    That is stoich for ethanol but 12.8 at WOT is lean. Can you richen up your fuel at WOT?
     

    Street Build 4K  28

    1992 Eagle Talon TSi AWD
    awd · automatic · 1G DSM

    761  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    552  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 779  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  11  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
  20. lglracer

    lglracer Supporting VIP

    109
    25
    Joined Jul 13, 2008
    Sacramento, California
    I can add some more fuel to my map and see what happens.
     

    Road Race Build 511  1

    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM

    Street Build 461  1

    1990 Mitsubishi Galant GSX
    awd · manual · Galant VR-4

    Street Build 1K  4

    1991 Mitsubishi Galant VR-4
    awd · manual · Galant VR-4

    493  0

    1991 Mitsubishi Eclipse N/T
    manual · 1G DSM
    Loading...
    1990TSIAWDTALON likes this.

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