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Thread: Timing mode?

  1. #1
    Endless Spinning
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    Default Timing mode?

    Would this:

    Logging Values NOT Being Displayed? (Fix in Here!)

    Also cause the car not to go into timing mode using the software?
    '00 SE
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  2. #2
    NismoTronic Guy
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    Quote Originally Posted by gomba View Post
    Would this:

    Logging Values NOT Being Displayed? (Fix in Here!)

    Also cause the car not to go into timing mode using the software?
    No, it would still go into timing mode.

    BUT if you are not seeing any live data, then that is an issue that needs to be corrected before you go much further. You can't tune very well if you don't have any relevant engine data.

    (ALSO PLEASE NOTE: After enabling the set timing mode you must click on the MAIN screen to make the upload changes to the emulator work. If you select it from the drop down menu and hit ctrl U right after, it will NOT upload your change to the emulator!)
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  3. #3
    MoreNuttyThanASquirlTurd
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    Quote Originally Posted by JKTUNING View Post

    (ALSO PLEASE NOTE: After enabling the set timing mode you must click on the MAIN screen to make the upload changes to the emulator work. If you select it from the drop down menu and hit ctrl U right after, it will NOT upload your change to the emulator!)
    Took me awhile to figure that one out.
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  4. #4
    NismoTronic Guy
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    Yes.. it will definitely be simplified in the new software!
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  5. #5
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  6. #6
    old and dirty.. and dirty
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    is there a how-to for timing? and what my limits are? can I set it to 17, 18 or 19 degrees? or am I limited to physically setting it at 15 like with a JWT ECU, and just letting the ECU do the work??
    1991 | black | SE-R
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  7. #7
    Probably Speeding...
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    Well, you can change the base time in the software. I imagine all calculations are made off of that base time. You can set it to whatever you like, but the performance gains are generated from the difference in your physical timing and what the ECU is expecting. e.g. You'll be 2* advanced only if your physical base time is set to 17* and the ECU is expecting it to be at 15*...

    Also, the timing you set depends on a lot more than your tune. If you're running aftermarket cams (like S4's or BC2's) you'll def. want to keep base time at 15*....

    Just my 2 cents.
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  8. #8
    old and dirty.. and dirty
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    its a VE, currently stock cams, but i will have N1 cams installed in the near future
    1991 | black | SE-R
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  9. #9
    Probably Speeding...
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    You need to look around about the N1 cams... If it's anything like any other high performance cams, they will need 15* base timing... I don't think it would be necessary to advance the timing on aftermarket cams anyway... they'll already be giving you a good boost in HP.
    *****************************************
    My Black (and soon green) 1996 SE-R (GTiR Swapped)
    I tune with Nismotronic SA.......Nismotronic SA FTW!!!
    Shhhhhh! I'm hunting ponies!

  10. #10
    Probably Speeding...
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    I'm not 100% sure about this, but you might be able to retard the timing in the software just a bit... so that the physical timing on the motor (for clearance reasons) doesn't change, but you might get a little more power by making the ECU think your timing is retarded physically... something to check out, perhaps. John???
    *****************************************
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    I tune with Nismotronic SA.......Nismotronic SA FTW!!!
    Shhhhhh! I'm hunting ponies!

  11. #11
    NismoTronic Guy
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    In EVERY case you want to sync the timing at the crank pulley with a timing light with what you have commanding in the software.

    This is what the "SET TIMING" mode does.. this way what you are requesting in the tune is actually what you are getting at the engine!

    For example, if you have you "SET TIMING" at 15*, you want to get your timing light out and set the timing at the crank pulley to 15* by moving the dizzy.

    So when the ECU is commanding a timing value it is actually running it at the engine!
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  12. #12
    Probably Speeding...
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    Thanks for clearing that up, John. Not that I would ever try this, but I'm just spit balling...

    Would there be any difference in advancing the timing 2* to 17* on a stock ECU (in which case the ECU would think you were at 15*) and using a timing light to get to 15* and then retarding the expected timing on the tune? I fail to see how this would be much different than the first case. In both instances the timing set with a light is 2* off from what the ECU is expecting.

    I'm in no way suggesting that you're wrong about this, just trying to understand what that difference would be.... It's all about learning here, right?
    *****************************************
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    I tune with Nismotronic SA.......Nismotronic SA FTW!!!
    Shhhhhh! I'm hunting ponies!

  13. #13
    NismoTronic Guy
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    Quote Originally Posted by blackngreenb14 View Post
    Would there be any difference in advancing the timing 2* to 17* on a stock ECU (in which case the ECU would think you were at 15*) and using a timing light to get to 15* and then retarding the expected timing on the tune? I fail to see how this would be much different than the first case. In both instances the timing set with a light is 2* off from what the ECU is expecting.
    If you used a timing light to get 15* and then retarded 2 degrees from the tune.. then you would be 4 degrees retarded from your first example.

    if you used a timing light to get 15* and then advanced 2 degrees in the tune .. then you would be equal to the first example for your ignition table.

    It is all relative to what you are seeing or expecting from the ECU .. you can set it up however you would like.

    If you set it to 17* while in set timing mode with the ECU commanding 15*, you will obviously be advanced 2* over what the ECU is commanding in the entire tune.

    Moral of the story is just set your dizzy timing to the same value you are commanding in set timing mode. This way everything matches up and your tune can easily be ported and/or compared to other tune files.
    Last edited by JKTUNING; 04-24-13 at 04:17 PM.
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  14. #14
    Probably Speeding...
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    Quote Originally Posted by JKTUNING View Post
    Quote Originally Posted by blackngreenb14 View Post
    Would there be any difference in advancing the timing 2* to 17* on a stock ECU (in which case the ECU would think you were at 15*) and using a timing light to get to 15* and then retarding the expected timing on the tune? I fail to see how this would be much different than the first case. In both instances the timing set with a light is 2* off from what the ECU is expecting.
    If you used a timing light to get 15* and then retarded 2 degrees from the tune.. then you would be 4 degrees retarded from your first example.

    if you used a timing light to get 15* and then advanced 2 degrees in the tune .. then you would be equal to the first example for your ignition table.

    It is all relative to what you are seeing or expecting from the ECU .. you can set it up however you would like.

    If you set it to 17* while in set timing mode with the ECU commanding 15*, you will obviously be advanced 2* over what the ECU is commanding in the entire tune.

    Moral of the story is just set your dizzy timing to the same value you are commanding in set timing mode. This way everything matches up and your tune can easily be ported and/or compared to other tune files.
    Understood... Thanks for clearing it up.
    *****************************************
    My Black (and soon green) 1996 SE-R (GTiR Swapped)
    I tune with Nismotronic SA.......Nismotronic SA FTW!!!
    Shhhhhh! I'm hunting ponies!

  15. #15
    old and dirty.. and dirty
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    -5
    0
    5
    10
    15
    20

    Is that counted left to right or right to left?

  16. #16
    TunerCode, it's OnTheChip
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    I replied to an email today with the following writeup and thought I would also post it here:

    To set the timing, make sure the engine is fully warmed up (ECT Trim is 0), go to the SETUP tab, EXTRAS, DIAGNOSTICS screen, set the "BASE IDLE IGNITION" to match the "TPS CLOSED TIMING TABLE" value at the current idle RPM, and then enable "Set Idle/Timing Mode". If the idle rpm changes, adjust the IACV idle speed screw to bring idle rpm back to the value from the "Base Target Idle RPM" table at the current ECT. Using a timing light, adjust the timing by turning the distributor/CAS so the timing matches the "BASE IDLE IGNITION" value. If the idle rpm changes, again adjust the IACV idle speed screw. Verify the timing with the timing light again and make any necessary adjustment. Continue this process until the timing matches the "BASE IDLE IGNITION" value and idle speed matches the value from the "Base Target Idle RPM" table at the current ECT. Disable "Set Idle/Timing Mode" and your done!

    Cheers,
    Dave
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