01-04 GM P/U 2500/3500 HD American Thunder Syst 1500 This is partly courtesy of

This is partly courtesy of the retained computer-controlled exhaust valves that limit noise during low-speed driving and open fully during high-load conditions to allow free flow

Dinan engineers designed the F55 MINI Cooper S exhaust to improve exhaust flow by reducing back pressure

5 in Center Outlet - 13 x 9

DINANTRONICS Sport Maximum Gains: Up to 30 HP

Larger BMW models with larger gearboxes require more leverage to make the gear changes which is why BMW employs different shift handle configurations for various applications

01-04 GM P/U 2500/3500 HD American Thunder Syst 1500 This is partly courtesy ofExhaust System American Thunder Cat Back 3 in Diameter Single Side Exit 4 in Polished Tips Steel Aluminized GM Fullsize Truck 2001 06 Kit