MAC Products offers both a traditional "H" pipe and their new, patent pending, PRO CHAMBER(tm). Split (one each side) manifolds or exhaust headers on any engine need to be balanced to each other. On a V-8 motor for
example, exhaust pulses enter respective collectors at uneven intervals of 90-180-270 degrees of engine rotation. This process hampers the full benefit of any exhaust header or manifold system by the long intervals between
exhaust pulses making balancing of exhaust mandatory for optimum power. Balance tubes between exhaust on opposite sides help transfer exhaust pulses from side to side to smooth out exhaust pulse and flow resulting in more
power and economy. MAC's PRO CHAMBER(tm) goes even further than traditional H-pipes to produce more torque and horsepower by merging exhaust pulses in one area. Merging of all exhaust gasses creates higher temperatures which
creates a boost in exhaust velocity plus lets exhaust gas see both outlets.
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