J&S Transit, LLC & Diesel Performance provides professional and quality Diesel Service & Repair. We have an excellent reputation as a diesel truck repair and service shop whether you're just looking for routine maintenance, or a full blown race engine, we can meet all of your diesel needs. Our professionals install quality parts to get the most performance out of your diesel truck. Specializing in custom diesel modifications for fuel economy and/or performance; we guarantee reliable services and upgrades. No job is too complicated. We do diesel repair on all makes and models of diesel motors. Ford PowerStroke, Dodge Cummins, Chevy / GMC Duramax. Offering: Tuning / Programing, DPF, DEF, & EGR Upgrades, Air Intake, Exhaust Systems, Exc.