To assure Holiday Delivery by 12/25 order before Noon MST:
By Dec 15 Standard Shipping (Free) - By Dec 18 Priority Shipping - By Dec 19 Express Shipping FREE SHIPPING within the US    NO Handling Fees

SEMA MemberAs Seen on TV: Velocity, MAVTVGive Your Ride ATTITUDE

The ADJUSTER Hero Card

The ADJUSTER vs AFC LiveWhat APP Customers are Saying

APP's Rack Cap is drilled 4mm deeperAPP Piston Oil Squirters, Cheap Insurance for your Expensive Engine


The ADJUSTER in Diesel World MagazineThe ADJUSTER in Diesel Power Magazine

APP Piston Oil Squirters in Diesel World MagazineAPP Billet Rack Cap in Diesel World MagazineAPP Billet Delivery Valve Holders in Diesel World Magazine

SEMA 2017, The ADJUSTER showcased on Laid-Back’s Cummins p-pumped “Jambulance”

The ADJUSTER by Attitude -- More power, better mileage, lower EGT's

The ADJUSTER in Premier Performance Product’s 6-pack and Weaver’s Customs' Diamond T

Diesels are all about ATTITUDE

Diesel Products for Attitude including The ADJUSTER
(More HP, Better Mileage, Lower EGT's, More Boost, Less Smoke)

Attitude Performance Product's 6.6l & 6.7l Fuel Rail Plugs

Attitude Performance Products

Serving the Diesel engine community with a goal of increased performance and reliability.

  • Attitude Performance Products is all about providing solutions for Diesel enthusiasts.
  • APP’s contributions to the industry support the demand for high-performance engines.
  • APP's internal research has identified parts for Diesel engines that help give authority to vehicles (trucks, boats, agricultural equipment)