1998.5-2002 5.9L 47RH/48RE Transmission Tuning
Dedicated TCM calibration for the 47RH and 48RE automatic transmissions found behind the 1998.5–2002 5.9L 24-valve Cummins. Critical if you've added power and need the transmission to keep up without slipping or overheating.
What's included
- VIN-matched 47RH / 48RE TCM calibration
- Increased line pressure and optimized shift timing for high-torque applications
- Torque converter lockup and shift scheduling tuned for your power level
- Datalogging support
How it works
Delivered via EFI Live (FlashScan V2). Submit your VIN and stock TCM file; NanoTorque returns a custom calibration you flash yourself. A FlashScan V2 device is required and not included.
Support tiers
- Limited (4 Weeks): Revision window open for four weeks; tune stays loaded on your tool afterward.
- Full (Lifetime): Unlimited revisions and lifetime access.
Intended for off-road and motorsport use only. Not for use on public roads where emissions regulations apply.