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  1. Best and worst Cummins ISL 400 engine years - iRV2

    Sep 5, 2022 · Discussion on the best and worst years for Cummins ISL 400 engines, including considerations for common rail fuel system and DEF system.

  2. Successfully did a DPF regen on 2022 with 6.7 diesel. Wahoo!

    Oct 30, 2024 · Hi Everyone, I got a lot of help from this forum - thank you all - so I've created an account and am posting this to give back. My vehicle is a 2022 RAM 2500 with the 6.7 …

  3. P203E Code, DEF Level Sensor Failed/Erratic - ramforum.com

    Jul 21, 2018 · Okay, I'm confused. I got the P203E code last week along with a CEL, "Reductant Level Sensor 1 Circuit Intermittent." Everything that I have read states that this code has three …

  4. Cummins ISB diesel won't start. - iRV2 Forums

    Nov 15, 2025 · iRV2 Forums > THE CHASSIS CLUB FORUMS > Freightliner Motorhome Chassis Forum Cummins ISB diesel won't start.

  5. DIY Diesel Particulate Filter (DPF) install - ramforum.com

    Jan 18, 2023 · I did this. Wanted to share/document for anyone considering the same. I have had my 2020 Ram 2500 Cummings 6.7 Turbo, 125000 miles for about a year. I got the dreaded …

  6. 2022 Cummins Regen Issues - RAM FORUM

    Jun 28, 2023 · I have a new '22 Ram with the 6.7 Cummins with 13K miles on it. It has been in and out of the shop for the last few weeks for a check engine light. The code refers to regen …

  7. Cummins Oil | RamForum.com | Dodge Ram Forum for Truck …

    Jun 23, 2025 · I have a 2025 RAM 2500 with the 6.7L Cummins engine and I want to make sure I use the right motor oil and I've always used Shell Rotella. I looked in the owner's manual and …

  8. Cummins 8.3 ISC Horsepower Ratings - iRV2 Forums

    Dec 10, 2012 · Maybe someone can help me understand how a Cummins 8.3 ISC Diesel can range from: 250 HP to 400 HP? 8.3 ISC hp and torque Examples: 660 pound force-feet (895 …

  9. Adding an engine block heater to the Cummins. - RAM FORUM

    Dec 15, 2014 · Block Heater Cord Install Ram 2500 6.7 Cummins Installing a block heater cord on a Ram 2500 Cummins. Factory preinstalled block heater in engine, adding aftermarket power …

  10. EGR Delete: Pros, Cons, and Best Kits to Use? - ramforum.com

    Jan 25, 2025 · Here is my full delete list of parts & mods made to my 2017 Cummins powered Laramie. 4TH Generation 6.7L Cummins Delete & Tune Mod List Delete & Tune mods • Edge …