Traction control

GripLogic Controller

Drag-racing traction controller that judges driveshaft spin as a percentage, every millisecond.

GripLogic Controller CAD render

GripLogic Controller in its enclosure, with the harness connector at the front.

What it does

  • Calculates driveshaft error as a share of target speed on every 1 ms tick, so the same spin gets the same response anywhere in the pass.
  • Blends retard between zone-table rows, up to 16 per table, so the pull grows smoothly with slip.
  • Traction modes for driveshaft profile, wheel slip, shocks, g-force, tire shake and wheelie-pedal, plus a spin detector.
  • The Windows app builds profiles from up to ten logged passes, including Davis, Holley and Haltech logs.

Specifications

ProcessorHigh-speed 32-bit microcontroller
Control rate1 ms
Holley outputsRetard and SmartDrop
Harness connectorJAE MX23A26NF1, 26-position, waterproof
PC connectionUSB-C
SoftwareGripLogic for Windows: tunes, live data, logged passes

Pinout

PowerGroundCAN HCAN LInputOutputNot used

Harness connector

JAE MX23A26NF1, 26-position. Looking into the connector on the module.

1312111098765432126252423222120191817161514
  • 1Front wheel speed in
  • 2Sensor ground
  • 3Front shock in
  • 4Rear shock in
  • 5Not connected
  • 6Driveshaft speed in
  • 7Trans brake in
  • 8Arming switch in
  • 9CAN H
  • 10Shock sensor 5 V
  • 11Tach in
  • 12Not connected
  • 13Not connected
  • 14Battery + (switched)
  • 15Battery +
  • 16Driveshaft sensor power
  • 17Front wheel sensor power
  • 18SmartDrop out
  • 19Driveshaft RPM out
  • 20Digital output
  • 21Retard out
  • 22CAN L
  • 230–5 V analog out
  • 24Ground
  • 25Ground
  • 26Ground

Not to scale. Check the numbers molded on the connector before wiring. Pin colors only show each pin's function. They don't reflect the actual wire colors of any included pigtail.

Before you buy

  • The tuning software runs on Windows only.