Diesel Engine Calculators

Single and compound turbo sizing, lift pump selection, EGT safety, nozzle sizing, smoke/lambda, and valve relief for Cummins, Duramax, Powerstroke.

Calculators in this category

Diesel Single Turbo Finder — Match Holset, BorgWarner, and Garrett turbos for Cummins, Duramax, and Powerstroke with airflow and drive pressure calculations.
Diesel Compound Turbo Sizing Calculator — Size compound twin turbo setups. Match S300/S400 and Holset turbos with pressure ratio split for Cummins, Duramax, and Powerstroke.
Diesel Lift Pump & Fuel System Calculator — FASS and AirDog sizing based on target HP with platform-specific warnings for VP44 and CP4 trucks.
Diesel EGT & Drive Pressure Calculator — Check pyrometer readings against safe limits. Pre-turbo vs post-turbo correction for Cummins, Duramax, and Powerstroke.
Diesel Nozzle & Pop Pressure Calculator — Nozzle sizing for Cummins P-pump, VE, and VP44. Pop pressure recommendations, shim sizing, and air/fuel match assessment.
Diesel Smoke Limit & Lambda Calculator — Diesel-specific lambda and AFR calculator with smoke prediction and boost-to-fuel balance analysis.
Cummins Valve Relief Calculator — Determine if your Cummins needs valve reliefs when upgrading cams. Covers 5.9L 12V, 24V, 6.7L, and 4BT with clearance analysis.