Established in 1999, we specialize in Powerstroke, Cummins, and Duramax. Here at DFI we believe in the philosophy “Quality Not Quantity” so  you can rest assured knowing  we offer the highest quality service and products.  Our shop is well-equipped with the latest technology and machine tools to make sure the job is done correctly. At DFI we pride ourselves on being one of very few shops in the Portland-Metro area that offers a chassis “Dyno Testing” capable of servicing diesel trucks, in addition we offer EFI Live tuning for today’s diesel trucks.