While supplies last, Refurbished MS3Pro ULTIMATE standalone ECU with TunerStudio license, documentation & installation files via USB drive. Choose from the following options:
- Refurbished MS3Pro ULTIMATE ECU only
- Include an ampseal connector kit and build your own harness!
- Add a universal 8′ flying lead harness
- GM LS 24x & 58x Plug & Play Harnesses available separately
Visit the MS3Pro ULTIMATE page for a complete list of features.
ALL REFURBISHED ITEMS have been tested, repaired if necessary, re-tested and have passed identical quality assurance testing as first quality. You should expect refurbished items to have reasonable cosmetic wear and tear such as scratches, small dents and mounting marks that will not affect the item’s normal operation.
All refurbished items arrive with a 30 day warranty and are considered FINAL SALE.
*All parts are sold for OFF ROAD RACE-ONLY, ground-vehicle use only. Aftermarket EFI/EMS systems are not for sale or use on pollution controlled roads/ vehicles. Alteration of emission related components constitutes tampering under the US EPA guidelines and can lead to substantial fines and penalties. Your state/district may also have specific rules restricting your tampering with your vehicle’s emissions system.