Dmtuning - Offers chip tuning services. Includes product overview, technical data and company profile. Tuning Box - Manufacturer of turbo diesel power kit, designed to boost output of diesel engines. AutoGym - Offers a range of tuning services, including ECU remapping and NOS system installation. Ferrea Racing Components - Manufacturer of valves and valve train components for racing and high performance applications. Fluidampr - Manufacturer of high performance harmonic dampers for racing or street use. Holley Performance Products - Distributor of engine parts, carburetors, fuel systems and nitrous oxide devices. Includes product overview, catalogue and dealer list. March Performance Pulleys - Manufactures high performance components, specializing in pulleys, ram air, and related parts for GM and Ford 8-cylinder engines. Muyol - Designer and manufacturer of performance parts for automotive engines. Includes company profile and product overview. Torqtec - Specializes in diesel tuning products. Includes product overview. Upsolute Chiptuning - Specialized in chip tuning for European brands. Includes company profile and product database. Raptor Performance - Manufacturer of miniature, self contained shift lights for better engine management. Includes product overview. Stage 6 Motorsports - Specializes in installation of custom and aftermarket turbo systems, dynamometer tuning, nitrous refills and drivetrain modifications. Includes service overview and company profile. Reher-Morrison Racing Engines - Builder of pro-stock engines. Includes service overview and company profile. E-Maps - Specializes in remapping and tuning of car chips. Includes product catalog and company profile. DMS Automotive - Offers engine upgrade services. Includes company profile, product overview, news and events. K&N Performance Filters - Manufacturer of air intake systems for most cars, trucks, sport utilities and motorcycles, designed to increase power and torque. RocketChip - Offers performance tuning for European, domestic, and Japanese vehicles. JBA Speed Shop - Parts and service for performance vehicles. Includes information about packages and services.