Quote Originally Posted by swingtan View Post
The basic settings are.....
  • All torque reduction control setting are set to off, except for B0517
  • B0517: TCS Torque Reduction By Thrttle Option - is set to Yes.
  • B2501: TCS Maximum Engine Torque - is set to a value over the expected peak torque. In mine it's 700 Nm
  • B2502: TCS Minimum Engine Torque - is set to the least amount of torque wanted. Mine is set to 80 Nm
  • B2503: Delivered Torque Upper Duty Cycle - set hi, 90% for me.
  • B2504: Delivered Torque Lower Duty Cycle - set medium, 35% for me. I think this helps set the control of the torque delivery when TCS is active.
  • B2514: TCS Throttle Limiter By Gear - All maxed out.
  • B2517: TCS Throttle Limiter By Input Speed -This is where it all happens. Set torque limits for each gear and RPM to suit the traction expected. The real work is done in 1st and 2nd gear. Here are my settings....
    1st Gear
    • 147.625000
    • 157.500000
    • 168.500000
    • 183.250000
    • 220.000000
    • 273.500000
    • 325.625000
    • 399.375000
    • 700.000000


    2nd Gear
    • 162.750000
    • 173.875000
    • 189.875000
    • 215.250000
    • 258.125000
    • 314.875000
    • 388.375000
    • 480.500000
    • 700.000000
    3rd and 4th are just higher settings again.
  • B2522:Torque Reduction Max - I have this set to 100 Nm


Now, with these settings and TCS turned on ( I.E. I haven't turned it off ) taking off hard on good dry bitumen has virtually no "detectable" wheel spin when sitting in the drivers seat. You can also feel the torque management release as you go through 3000 RPM. If you check the log data though, you can see around 5 to 10 kmh of wheel spin. So there is plenty of power getting to the rear wheels, just not enough to really light up the tires.

Simon.
I did not find those parameters in my .tun file is my operating system different ? i have a LS1 Lumina SS coupe (GTO)