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Discussion Starter #1
Since there's really no manual for ECUFlash, I've decided that we should make our own on here, section at a time.

Some time ago, we started with the Turbo related maps under ECUflash. We are also in the process of covering the Fuel related maps. This thread can be used for a discussion, and once we iron out the details, I'll add it into the ECUFlash Evo X User Manual.

Please use the format below to describe each map:

Map Name:
Map Dimensions:
Map Axes:
Map Units:
Min/Max values of Units:
Map Description:
Reasons to modify this map:
Tuning Tips:
Warnings & Considerations:
 

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Discussion Starter #2
Maps left to describe:

  • SST Upshift - Lower Bound Fueling
  • SST Upshift - Lower Bound Timing
  • SST Upshift - Lower Bound Timing Reduction vs Load/RPM
  • SST Clutch Pressure Ramp Up - A/B/C
  • SST Clutch Pressure - Unknown
  • SST Clutch Pressure Ramp Up - Adjust Offset 2D
  • SST Throttle Requested Torque Map #1 - Liftoff
  • SST Throttle Requested Torque Map #2 - Cold/Interpolated
  • SST Throttle Requested Torque Map #3 - Hot/Interpolated
  • SST Throttle Requested Torque Subtractor Map
  • SST Throttle Requested Torque Subtractor Map Percent
  • SST Throttle Requested Torque Ramp Rate - SST Normal Mode
  • SST Throttle Requested Torque Ramp Rate - SST Sport Mode
  • SST Throttle Requested Torque Ramp Rate - SST S-SPort Mode
  • SST Torque Limit #1 - Error
  • SST Torque Limit #2 - Cold/Interpolated
  • SST Torque Limit #3 - Hot/Interpolated
  • SST Torque Limit #4 - Unknown
  • SST Torque Map #1 - Error (unknown)
  • SST Torque Map #2 - Cold/Interpolated (unknown)
  • SST Torque Map #3 - Hot/Interpolated (unknown)
  • SST Torque Limit Reduction Table by RPM (CPRU_A)
  • SST Torque Limit Reduction Table by RPM (TqLimit_2_3)
  • SST Torque Limit Reduction Table by RPM (TqLimit_4, CPRU_C)
  • SST Max Requested Torque Limit
  • SST Torque Reduction On Exceedance

Maps completed:

  • 1st gear TPS limiter (Drive)
  • 1st gear TPS limiter (Reverse)
 

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Map Name: 1st gear TPS limiter (Drive), 1st gear TPS limiter (Reverse)
Map Dimensions: 1x18
Map Axes: RPM
Map Units: Throttle Percentage
Min/Max values of Units: 0-100
Map Description: This is a straightforward map. From the factory, throttle position is limited at certain RPMs in first gear as to limit torque.
Reasons to modify this map: To allow for full throttle (at the throttle body) throughout the entire RPM range of first gear.
Tuning Tips: Set all of the values in this map to 100 for smaller turbo cars. On larger turbo cars, reduce this in high rpm area to help car get out of first gear before hitting the rev limit.
Warnings & Considerations: This my accelerate wear on your transmission.
 

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Map Name: 1st gear TPS limiter (Drive), 1st gear TPS limiter (Reverse)
Map Dimensions: 1x18
Map Axes: RPM
Map Units: Throttle Percentage
Min/Max values of Units: 0-100
Map Description: This is a straightforward map. From the factory, throttle position is limited at certain RPMs in first gear as to limit torque.
Reasons to modify this map: To allow for full throttle (at the throttle body) throughout the entire RPM range of first gear.
Tuning Tips: Set all of the values in this map to 100.
Warnings & Considerations: This my accelerate wear on your transmission.
Tuning Tips: On larger turbo cars, reduce this in high rpm area to help car get out of first gear before hitting the rev limit. If this isn't necessary, then follow the above.
 

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Discussion Starter #5
Thanks, updated. If you have any maps that you'd like to describe, please feel free.
 

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Discussion Starter #6
Anyone know how the following tables work? Do you generally want to increase or decrease numbers here?


  • SST Torque Limit Reduction Table by RPM (CPRU_A)
  • SST Torque Limit Reduction Table by RPM (TqLimit_2_3)
  • SST Torque Limit Reduction Table by RPM (TqLimit_4, CPRU_C)
  • SST Throttle Requested Torque Subtractor Map
  • SST Throttle Requested Torque Subtractor Map Percent
 

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  • SST Torque Limit Reduction Table by RPM (CPRU_A)
  • SST Torque Limit Reduction Table by RPM (TqLimit_2_3)
  • SST Torque Limit Reduction Table by RPM (TqLimit_4, CPRU_C)
These are RPM-based adjustments for the other SST tables. It lops off a fixed amount from the resulting lookup values.

In theory, reducing these makes for higher SST torque delivery (ie. less slip).

In practice, it's side-effect city. Bad rev-matching, delayed upshifts, etc. Reducing values in these tables should therefore be a last resort.

Keep all three in line, I suggest. Side effects seem to get worse if only some of them are revised.


  • SST Throttle Requested Torque Subtractor Map
Zero this out. Stock values reduce SST torque delivery (ie. increase slip) when boost is over target.

  • SST Throttle Requested Torque Subtractor Map Percent
Leave this alone, as the above edit does all that is required.

Rich
 

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Discussion Starter #8
Ok, so keep these stock:


  • SST Torque Limit Reduction Table by RPM (CPRU_A)
  • SST Torque Limit Reduction Table by RPM (TqLimit_2_3)
  • SST Torque Limit Reduction Table by RPM (TqLimit_4, CPRU_C)
  • SST Throttle Requested Torque Subtractor Map Percent
Would you mind writing up a better description of each for the manual since my understanding of them is vague?



And zero this out:





  • SST Throttle Requested Torque Subtractor Map
I had previous zeroed this one out, but someone told me it was wrong to do so, so I second guessed it.
 

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Discussion Starter #9
Map Name: SST Clutch Pressure Ramp Up - A/B/C
Map Dimensions: 21 x 16
Map Axes: Unknown vs RPM
Map Units: Arbitrary units? PSI?
Min/Max values of Units: 0-765
Map Description: This map "controls" the pressure applied to the clutches.
Reasons to modify this map: To stop clutch slip.
Tuning Tips: Log the appropriate clutch slip value (odd or even, depending on what gear you're working in) during a WOT pull in S-Sport mode. If slip is evident, increase the values little at a time where the slip occurs.
Warnings & Considerations: Larger numbers will result in less slip and harder shifts.
 

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  • SST Upshift - Lower Bound Fueling Same as lower bound timing but applies to fueling during shift
  • SST Upshift - Lower Bound Timing same as the primary table of same description but applied during shift
  • SST Upshift - Lower Bound Timing Reduction vs Load/RPM same as the primary table of same description but applied during shift
  • SST Clutch Pressure Ramp Up - A/B/C These need to be adjusted similar to other platforms with automatic transmissions. (Nissan, GM)
  • SST Clutch Pressure - Unknown touchy table. Effects shifting and clamping. Normally leave it alone unless other more straight forward adjustments are not working.
  • SST Clutch Pressure Ramp Up - Adjust Offset 2D
  • SST Throttle Requested Torque Map #1 - Liftoff somewhat throttle related. Effects shift firmness in a linear fashion. Increases clamping. Usually works best if somewhat lower than 2 and 3
  • SST Throttle Requested Torque Map #2 - Cold/Interpolated see above
  • SST Throttle Requested Torque Map #3 - Hot/Interpolated see above
  • SST Throttle Requested Torque Subtractor Map stock values should work if everything else is correct
  • SST Throttle Requested Torque Subtractor Map Percent stock values should work if everything else is correct
  • SST Throttle Requested Torque Ramp Rate - SST Normal Mode stock values should work if everything else is correct
  • SST Throttle Requested Torque Ramp Rate - SST Sport Mode stock values should work if everything else is correct
  • SST Throttle Requested Torque Ramp Rate - SST S-SPort Mode stock values should work if everything else is correct
  • SST Torque Limit #1 - Error should be relative to actual torque output of vehicle
  • SST Torque Limit #2 - Cold/Interpolated should be relative to actual torque output of vehicle
  • SST Torque Limit #3 - Hot/Interpolated should be relative to actual torque output of vehicle
  • SST Torque Limit #4 - Unknown should be relative to actual torque output of vehicle
  • SST Torque Map #1 - Error (unknown) should be relative to actual torque output of vehicle
  • SST Torque Map #2 - Cold/Interpolated (unknown) should be relative to actual torque output of vehicle
  • SST Torque Map #3 - Hot/Interpolated (unknown) should be relative to actual torque output of vehicle
  • SST Torque Limit Reduction Table by RPM (CPRU_A)
  • SST Torque Limit Reduction Table by RPM (TqLimit_2_3)
  • SST Torque Limit Reduction Table by RPM (TqLimit_4, CPRU_C)
  • SST Max Requested Torque Limit can be raised slightly. If other tables are out of whack you can get side effects
  • SST Torque Reduction On Exceedance zero complete table
How the transmission determines where it is in the map during operation is very dependent on how the ecu itself is calculating load. Because of this, once you get beyond high stock turbo power levels, what works on one car does not necessarily work on another. These things all need to be in balance with each other.



Maps completed:

  • 1st gear TPS limiter (Drive)
  • 1st gear TPS limiter (Reverse)
 

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Discussion Starter #11
So we seem to have a discrepancy on the SST Throttle Requested Torque Subtractor Map. Richardh is saying to zero it out, kozmic is saying to keep it stock...
 
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