S&S Diesel Motorsport builds injectors for every major performance diesel platform — and Hardway Perfor...
Hardway Performance
In-depth guides, tuning tips, and technical documentation from the Hardway Performance team.
Video Library
Step-by-step tutorials and technical breakdowns straight from our team.
Knowledge Base
S&S Diesel Motorsport builds injectors for every major performance diesel platform — and Hardway Perfor...
The factory electronics on your build were engineered to meet a cost target — not a performance target. ECU...
The stock MAP sensor on your 5.9 or 6.7 Cummins tops out at 50 PSIA. Once you exceed that ceiling — compoun...
Your Cummins left the factory with power left on the table — intentionally. Whether you're running a 2019–2...