Search for “diesel”

Boost the performance and reliability of your 2020–2025 GMC Sierra or Chevrolet Silverado 1500 LM2/LZ0 3.0L Duramax with the JS Speed LM2/LZ0 EGR & Cooler Delete Kit. Engineered for precision, this kit eliminates the failure-prone EGR cooler s...

Remove restrictive EGR components and simplify your work-truck setup. This EGR Valve & Cooler Delete Kit is engineered specifically for 2013–2021 Ram 6.7L Cummins Cab & Chassis models. Designed for off-road and competition applications, th...

Choose the Iron Loader V2 calibration for your Ram EcoDieselFor a 2014–2017 Ram 1500 with the 3.0L EcoDiesel, this package pairs an Iron Loader V2 device with the selected tune. The choice matters: StockPlus retains emissions equipment, while the ...

Boost Reliability & Performance The LMM 6.6L EGR Delete Kit is a proven upgrade for 2007.5–2010 GMC Sierra and Chevrolet Silverado 2500/3500 Duramax 6.6L engines. By eliminating the restrictive EGR system, this kit reduces common issues such a...

Increase exhaust flow and unlock stronger performance with a stainless race exhaust built for the Duramax LML. This Downpipe-Back Race Exhaust System is designed for 2011–2015 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with t...

Reduce EGTs & Protect Your Engine Eliminate one of the most common failure points in the 2007.5–2018 RAM Cummins 6.7L engine with this Grid Heater Delete Kit. By removing the stock grid heater, you eliminate the risk of bolt failure while impr...

Upgrade the exhaust on your 2011–2019 Ford F-350, F-450, or F-550 Cab & Chassis 6.7L Powerstroke with this complete 4" downpipe-back exhaust system. Built from stainless steel and designed around the commercial truck chassis, it replaces the e...

The EZX is the ultimate performance upgrade for your late model Ford Power Stroke offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature ...

The Duramax LML EGR Delete Kit is a proven upgrade for 2011–2014 GMC Sierra, Chevrolet Silverado 2500/3500, and Savana/Express Vans. This kit completely removes the restrictive factory EGR system, helping to improve performance, reliability, and e...

Choose the pipe material for your Grand Cherokee EcoDieselThis 3-inch Cat/DPF replacement pipe is listed for the 2014–2018 Jeep Grand Cherokee with the 3.0L EcoDiesel. It replaces the relevant factory exhaust section for an appropriately configure...

This 4-inch SCR/urea race pipe completes the exhaust section after the matching CAT/DPF race pipe on the listed Ram Cab & Chassis application. Vehicle fitment 2011–2012 Ram 6.7L Cummins Cab & Chassis. Over-70-inch cab-to-axle configuration...

Improve your truck’s breathing and throttle response with this Cold Air Intake System, designed specifically for RAM Cummins 6.7L trucks. Featuring precision mandrel-bent tubing and an oversized cotton filter, this intake reduces air restrictions ...

Boost fuel economy, reliability, and airflow with a complete EGR delete solution for your 3.0L Powerstroke. The Ford Powerstroke 3.0L EGR Delete Kit is a complete solution for improving performance and reliability in 2018–2020 F150 Powerstroke die...

The EZX is the ultimate performance upgrade for your late model Ford Power Stroke offering total control over your truck with power adjustability on-the-fly. Offering easy installation, improved fuel economy, better towing performance and feature ...

These JS Speed Diesel calibration files are selected by L5P model year: a five-level SOTF file for the earlier platform, or a single-calibration file for the later platform. Vehicle fitment 2017–2023 L5P: select Switch On The Fly. 2024–2025 L5P: s...

Due to uncontrollable supply chain and material constraints, the Pulsar is currently on back order but are being assembled and shipped daily.The Pulsar is the most innovative performance in-line tuner to ever hit the market. The Pulsar in-line mod...