Example: Hi-flo Y-pipe with Catalytic converters
 

Hi-FLO Y-pipe Adds about 25 HORSEPOWER BY reducing flow restrictions caused by the tight bends, and higher pressure loss of the stock catalytic converter system. This system is a one-piece stainless steel design which is a direct replacement for the stock converter set. It is a simple bolt-on modification that will allow your SHO to operate with less backpressure and therefore more airflow. It is a great complement to the 2.5 inch mandrel bent exhaust systems on the market today. Available for mTX or ATX.

Example: The High Flow Dynomax Exhaust system for the SHO
 

Direct-fit Super Turbo mufflers.
All-aluminized mandrel bent pipes.
Many Super Turbo systems follow the O.E. routing and attach directly to O.E. mounting locations.
Required clamps and hangers are included.
 

Example: Under-drive pulleys
 

UNDER-DRIVE PULLEYS ADD ABOUT 10 HORSEPOWER BY SLOWING DOWN THE ACCESSORIES [ A/C, ALTERNATOR, POWER STEERING AND WATER PUMP] 25%. THIS ALSO ADDS RELIABILITY BY NOT ALLOWING THE ACCESSORIES TO SPIN TOO FAST AT HIGH R.P.M. THE PULLEYS CONSIST OF A HARMONIC BALANCER CRANKSHAFT PULLEY AND AN ALTERNATOR PULLEY MADE OF BLACK-NITRIDE STEEL. NEW CORRECT LENGTH GATES BELTS ARE INCLUDED. We carry ASP pulleys

Example: K&N Filter
 

K&N FILTER/CHARGER IS A DIRECT REPLACEMENT LIFETIME AIR FILTER THAT INCREASES POWER ABOUT 5 HORSEPOWER.

Example: Mass-air Meter

73MM MASS AIR METER IS A DIRECT REPLACEMENT UNIT FOR THE 55MM FACTORY UNIT AND USES THE FACTORY ELECTRONICS. POWER INCREASE IS ABOUT 10 HORSEPOWER. Manufactured by C&L/Vortech.