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SKU : MAC-PC4900

Mac 99-04 Mustang 2V/4V Off-Road Shorty Aluminized ProChamber (Use w/Mac Longtubes)

Customer Reviews


Ford Mustang GT 2Valve & Cobra 4Valve 4.6L V8 1999-2004 2½" Aluminized Steel Off Road Pro Chamber to MAC Long Tube Headers

 The MAC Patented Pro Chamber™ has made the current intermediate systems obsolete all together. Split (one each side) manifold or exhaust headers on any engine, need to be balanced to each other. On a V8 motor for example, the exhaust pulses enter respective collectors at uneven intervals of 0-90-180-270 degrees of engine rotation. This process hampers the full benefits of any exhaust header system or manifold by the long intervals between exhaust pulses. Balancing of exhaust gases in mandatory for optimum power. Balance tubes between exhaust, on opposite side, helps transfer exhaust pulses for side to side to smooth out the exhaust pulses and flow. This results in more Power and a broader Torque band.

 The MAC Pro Chamber goes even futher than the Traditional X & H-Pipes to produce More Torque and Horse Power by merging the Exhaust Pulses into one area. Merging of all Exhaust Gases creates Higher Temperatures which creates a Boost in Exhaust Velocity and allows the Exhaust Gases to see and use both Outlets.

 Your Exhaust will think it's a 180° Fully Tuned Header!

 ***The MAC PC4900 is intended for Off Road Use Only, Not intended for Street Use***

 Chassis Dyno Figures on MAC® Pro Chamber as Tested in the March 1997 Issue of 5.0 Mustang Magazine. Horse Power is Rear Wheel Horse Power not Crank!

 The MAC Pro Chamber Tested with Stock Manifolds and Stock Cat-Back System. No other Modifications had been changed other then the MAC Pro Chamber.

 Rear Wheel Horsepower 

Stock HP101125147166170166
MAC Pro Chamber118153179200212207

 23 Rear Wheel Horsepower Average through RPM Range!

Vehicle Application(s)

This product fits the following models and years

SVT Cobra1999 2000 2001 2003 2004
Mustang GT1999 2000 2001 2002 2003 2004
Mach-12003 2004

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