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    Thread: mk4 8vt - MS2

    1. Member kevinescobar15's Avatar
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      08-01-2012 04:16 PM #26
      Quote Originally Posted by need_a_VR6 View Post
      I was getting ~3-12afr in general, not sure why.
      reason why is because the ground on the gauge is different than everuthing else on ms. however afrs under boost are good. varies from 10.8 - 11.7

      Quote Originally Posted by need_a_VR6 View Post
      There's nothing in the logs I see at all, it might be worth doing a tooth or composite log during a pull and see if there's lost sync that the ecu doesn't see. Also sent you a note over email about the AFRs, they are very strange.
      When you say it might be worth doing a tooth what do you mean by that?
      One slow MK4 8vT

    2. Geriatric Member ValveCoverGasket's Avatar
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      08-01-2012 04:18 PM #27
      Quote Originally Posted by kevinescobar15 View Post
      reason why is because the ground on the gauge is different than everuthing else on ms.
      you need to fix that. the wideband stuff has to be grounded at the same spot as MS otherwise whatever numbers youre seeing can potentially be 1-1.5 points off...

    3. Member kevinescobar15's Avatar
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      08-01-2012 05:36 PM #28
      Quote Originally Posted by ValveCoverGasket View Post
      you need to fix that. the wideband stuff has to be grounded at the same spot as MS otherwise whatever numbers youre seeing can potentially be 1-1.5 points off...
      I understand but we have the tune only based off of tps and the ve table. for now we aren't using the afr table.. Although i am changing the ground once i pull the head out since i need to replace piston rings.
      One slow MK4 8vT

    4. Geriatric Member ValveCoverGasket's Avatar
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      08-01-2012 05:52 PM #29
      right, but the only way you know if that tune is correct is by either watching the AFR gauge, or using it as a feedback for autotune.
      in either case it could be leading you down the wrong path if its off

    5. Member kevinescobar15's Avatar
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      08-01-2012 08:50 PM #30
      Quote Originally Posted by ValveCoverGasket View Post
      right, but the only way you know if that tune is correct is by either watching the AFR gauge, or using it as a feedback for autotune.
      in either case it could be leading you down the wrong path if its off
      yeah we have been using the gauge and the gauge is good, the only down side to not having the ground where ms is grounded is that on the computer it shows something different. soon ill be fixing that, that way we can start using AFR's to tune better.

      So, today i was checking what the issue was with the car throwing so much smoke after doing those logs and came up with this...

      Comp test:
      Cylinder one: 140
      Cylinder two: 145
      Cylinder three: 146
      Cylinder four: 147

      Also spark plugs come out clean, no oil residue.

      So now, i'm thinking that the valve stem seals just went out on me all the way. The car was already smoking a little in the morning but now its more constant but it kind of freaked me out when i saw that much smoke after those few pulls.

      Re-gaped spark plugs to 25 and now ill see what that does to the RPM
      One slow MK4 8vT

    6. Geriatric Member need_a_VR6's Avatar
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      08-01-2012 11:24 PM #31
      You wb cant even read 3afr on gas, something else is up. You using the narrowband output to the ms without changing it in lm programmer?

      In any case without afr reading right in the logs its hard for random guys on the internet to help withkout asking, wtf is up with the afr a bunch!
      -Paul
      1995 GTI VR6 - Retired - 12.90@106 R32 power - 12.833@106 12v power
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    7. Member kevinescobar15's Avatar
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      08-02-2012 01:04 AM #32
      Quote Originally Posted by need_a_VR6 View Post
      You wb cant even read 3afr on gas, something else is up. You using the narrowband output to the ms without changing it in lm programmer?

      In any case without afr reading right in the logs its hard for random guys on the internet to help withkout asking, wtf is up with the afr a bunch!
      Yeah sorry about that.. ill fix it asap and get back to you guys, i just thought maybe there was something else up with it that you guys could see wrong with the msq
      One slow MK4 8vT

    8. Member kevinescobar15's Avatar
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      08-30-2012 09:56 PM #33
      Hey, sorry for the delay in the response. so the issue wasn't anything ecu related. everything pointed out to be the wastegate. faulty wg. if i run it with out the boost controller, just off of the wg spring (10psi) then it revs smoodly up.to 7400. Currently im running 14psi and it seems to hold good but i can't go any higher. now is the time to buy a new wastegate.

      Now my other question is, i have been looking into adding an idle stabilizer but im not really sure where to start from? From what car can i get it out of that is compatible and easy to use with ms. if you guys have any thoughts on this, would be great appreciate it.
      One slow MK4 8vT

    9. Geriatric Member need_a_VR6's Avatar
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      08-30-2012 10:51 PM #34
      2 wire from an aba or vr6 is about as simple as it gets.
      -Paul
      1995 GTI VR6 - Retired - 12.90@106 R32 power - 12.833@106 12v power
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    10. Member kevinescobar15's Avatar
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      08-31-2012 03:16 AM #35
      Does it hook up straight to ms through a pin or how would that work? I'm clueless when it comes to isv's systems.
      One slow MK4 8vT

    11. Member Prof315's Avatar
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      08-31-2012 06:15 AM #36
      Quote Originally Posted by kevinescobar15 View Post
      Does it hook up straight to ms through a pin or how would that work? I'm clueless when it comes to isv's systems.
      You'd hook switched 12V to pin 1 of the ISV and the FIDLE wire to pin 2. This does assume that your board has a TIP 120 mod done to it. What are you using for a throttle body? ( there might be easier cleaner ways)
      The Professor
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    12. Geriatric Member need_a_VR6's Avatar
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      08-31-2012 08:13 AM #37
      True if hes using an obd2 dbc throttle body there is the option of using the integrated one.
      -Paul
      1995 GTI VR6 - Retired - 12.90@106 R32 power - 12.833@106 12v power
      KPTuned - Official MegaSquirt: Sales - Repair - Installation - Tuning
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    13. Member kevinescobar15's Avatar
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      08-31-2012 11:14 AM #38
      Quote Originally Posted by Prof315 View Post
      You'd hook switched 12V to pin 1 of the ISV and the FIDLE wire to pin 2. This does assume that your board has a TIP 120 mod done to it. What are you using for a throttle body? ( there might be easier cleaner ways)
      Im using an obd1 vr6 tb. I was always told that i couldn't use the ob2 because it was too complex and ms wouldn't support it. i do have an ob2 tb that i could use if that would be easier.
      One slow MK4 8vT

    14. Member Prof315's Avatar
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      08-31-2012 12:51 PM #39
      Quote Originally Posted by kevinescobar15 View Post
      Im using an obd1 vr6 tb. I was always told that i couldn't use the ob2 because it was too complex and ms wouldn't support it. i do have an ob2 tb that i could use if that would be easier.
      Well Paul has gotten the OBD2 TBs to work and I'm in the process of getting one dialed in on my car with MS3. That will be a much cleaner install especially with a turbo. Regardless of which way you go the mainboard Fidle circuit will need the TIP 120 mod.
      The Professor
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      92 Corrado OBD2 ABA-T (BW EFR 6258) Powered by MS3Pro
      Linfert Performance: The Megasquirt guy in central Florida Like my Facebook page....
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    15. Member kevinescobar15's Avatar
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      09-01-2012 01:40 PM #40
      And after doing that mod then just run the extra cables to ms? And did Paul get it dialed in with ms1, ms2, or ms3?
      One slow MK4 8vT

    16. Geriatric Member need_a_VR6's Avatar
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      09-01-2012 02:02 PM #41
      I got it to work on ms1 with 100hz and Jeans multiplier board set to 5 or 6x and on ms2 straight at 200hz.
      -Paul
      1995 GTI VR6 - Retired - 12.90@106 R32 power - 12.833@106 12v power
      KPTuned - Official MegaSquirt: Sales - Repair - Installation - Tuning
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    17. Member kevinescobar15's Avatar
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      09-01-2012 03:51 PM #42
      I will try and give that a shot. only problem is that i have to change the flange on my sri to fit the obd2 tb and mod the board.
      One slow MK4 8vT

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