How driveshaft RPM torque management works
Driveshaft RPM torque management is most often used in drag racing. A driveshaft speed sensor tells the ECU how fast the driveshaft is turning, and you give it a target to follow through the run in the driveshaft RPM target table. If the driveshaft speeds up faster than the target, the tires are spinning, and the ECU steps in to take power away until it's back on target.
It has two ways to do that: pulling ignition timing, set in this table, and cutting power with a percentage cut. Ignition correction is the gentler of the two, trimming power without the harshness of a cut.
Our approach
Haltech hasn't published detailed help text for this table yet, so check its axes in your version of NSP before tuning. Start with small corrections, log driveshaft speed against target on every pass, and add more only where the car clearly needs it. For hardware, see the driveshaft RPM sensor and the 8-magnet driveshaft split collar. The torque management overview ties it all together, or book a free consultation with us.
