INJECTABLES — 2007.5–2012 6.7L CUMMINS

Unlock cooler exhaust gas temperatures (EGTs), quicker spool, and added power for your 2007.5–2012 Ram 2500/3500 6.7L Cummins with proven injectables such as water–methanol systems and (race-only) nitrous hardware. CPP Diesel curates parts that integrate cleanly with the 6.7’s common-rail platform so you can tow heavier, climb grades without de-fueling, or get that extra edge on the track—while watching critical temps.

Shop By Goal

Lower EGTs & Add Safe Power (Water Injection):
- SCHEID DIESEL — Water Injection Components & Accessories (race-proven hardware that pairs well with 6.7 CR setups)
Monitor & Protect (Must-Have with Injectables):
- EDGE 98900 EGT Probe — add/replace an EGT thermocouple so you always know your temps when spraying or injecting
Explore Universal Water/NOS/Propane Hardware:
- Water / NOS / Propane (Universal) — auxiliary tanks, lines, and universal hardware often used on Cummins builds

Note: Some race kits are universal by design and install cleanly on 6.7L Cummins with basic plumbing, wiring, and mounting. Always confirm nozzle sizing, trigger strategy (MAP/boost or progressive), and failsafes for your use case.

Why Add Water–Methanol on a 6.7L?

EGT Control: Atomized water absorbs heat and methanol contributes fuel energy, keeping EGTs in check under load.
Cleaner, Denser Intake Charge: Helps mitigate heat-soak on long pulls or back-to-back runs.
Power Support: Complements airflow and tune upgrades for towing, sled pulling, or drag passes.

Fitment Notes — 2007.5–2012 (6.7L Cummins)

Compatible with stock or modified turbos, intercoolers, and CP3-based fuel systems.
Target injection post-intercooler in the charge pipe for even distribution; consider twin-nozzle layouts on higher power builds.
Plan for monitoring (EGT at minimum) and a failsafe to shut injection off on low fluid/flow.

Compliance & Use

Emissions & Safety: Certain components are for competition/off-road use only. Check your local and federal regulations. Install professionally and verify no leaks, proper routing, and secure bottle/tank mounting.

Frequently Asked Questions

Do I need tuning to run water–methanol?

Not strictly, but a calibrated tune maximizes gains and ensures the ECM doesn’t fight added charge cooling. Regardless, always monitor EGTs.

What mix should I run?

A common starting point is 50/50 water–methanol (washer fluid with proper meth content works in a pinch). Increase flow gradually while watching EGT and knock sensors, and use an injection failsafe.

How much EGT drop can I expect?

Results vary by load and nozzle size; drops of 150–300°F are typical on towing/working trucks. High-power builds may see more.

Is nitrous safe on a diesel?

When set up correctly with conservative jetting and proper monitoring, nitrous can aid spool and top-end power. It is for race/off-road use only and demands EGT monitoring and adequate fuel/air supply.

Do I need head studs first?

For mild water–meth on a stock turbo, studs are recommended but not always required. If you tow heavy, run elevated boost, or use nitrous, upgrade to quality head studs before turning things up.

Where should I place the nozzle(s)?

Post-intercooler, in a straight section of charge pipe before the intake horn. Higher output builds often use two smaller nozzles for better atomization.

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