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Thread: RB Turbo Logs

  1. #26
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    "CAN actual ign. adv." is the actual timing
    Last edited by jpsimon; 08-18-2010 at 04:37 PM.

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    so what are debug byte 2-word2-word 4?

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    those are related to the wastegate autotuning adjustments, nothing worth mentioning

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    i think I need someone to chime in on whats good timing and bad timing then. I thought Good timing was 10* and above. Your saying your log looks good @ 17 psi but is under 10 most of the rpm.
    Im confused.. whats normal, whats good, and whats great, and what is too much?
    Last edited by LostMarine; 08-18-2010 at 04:56 PM.

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    There's no knock activity, timing isn't being pulled, it's nice and smooth. For me the car feels the strongest around this compromise of boost/timing in a 3rd gear pull. I could lower boost and timing would advance more, but like i said this is sort of the happy medium for me. (at that particular time, of course things change with differing ambient temps and heat soak etc).

    With meth it should look like your log (10+ throughout and rising towards redline).

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    ok, sounds clear. so obviously, dont want drops/knock. but even if smooth, what # is said to be low or not as good?

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    *yesterday did a couple more logs going all the way to redline and at 17psi at around 6900rpms timing gets up to 13.

  8. #33
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    I'm a fan of staying above 8-9 degrees through multiple gear pulls meaning floor it 2nd and let off at the end of 4th. If your timing stays at 8-9 and higher you are running safe. Any lower, being that you don't have control over timing means you at one point knocked your way to a smooth lower timing curve....which I avoid lime the plague.

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    +1 whats normal? too much?
    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    i think I need someone to chime in on whats good timing and bad timing then. I thought Good timing was 10* and above. Your saying your log looks good @ 17 psi but is under 10 most of the rpm.
    Im confused.. whats normal, whats good, and whats great, and what is too much?
    Click here to enlarge

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    i dunno, FWIW, im seeing 18+ now on a good mix of meth @ 18 psi in 4th gr.. i think anyway thats what i just saw, let me doublecheck that ...

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    Click here to enlarge Originally Posted by alpinedevil335 Click here to enlarge
    +1 whats normal? too much?
    You won't ever get too much ignition advance, these cars don't have a manual crank-angle-sensor that you can adjust. I believe perfect timing will result in 14-15 degress up top? Not too sure, I don't have a BT tool yet and I don't know it off the top of my head.

    Normally people run higher boost with a bit less ignition timing because your car is faster that way, but you want to avoid big drops or unstable advance, which is indication of a knock (pre-ignition) event and too high of cylinder temperature.

    I'm holding out for next gen JB.

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    Click here to enlarge Originally Posted by alpinedevil335 Click here to enlarge
    +1 whats normal? too much?
    You won't ever get too much ignition advance, these cars don't have a manual crank-angle-sensor that you can adjust. I believe perfect timing will result in 14-15 degress up top? Not too sure, I don't have a BT tool yet and I don't know it off the top of my head.

    Normally people run higher boost with a bit less ignition timing because your car is faster that way, but you want to avoid big drops or unstable advance, which is indication of a knock (pre-ignition) event and too high of cylinder temperature.

    I'm holding out for next gen JB.

  13. #38
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    so as long as ong as it doesnt drop, its best to have much timing as possible, so if its high, dont worry because the ECU/DME isnt going to take it too far?

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