Acoustic Super Charger® exhaust,
How does it work? Page

Learn about the new technology that blows away conventional scavenge technology of the ‘50s.

Least expensive power adder; supercharge, at a scavenge prices.


BIG BLOCK POWER mid range.

Enhanced Power Band.

Greater Fuel efficiency.

Cooler running engine.

Simple design: no moving parts: nothing to burn out, nothing to wear out.

Compatible with super chargers, headers and/or converters.

Outrageous 4 Channel Surround Sound.

Finally, the Acoustic Super Charger® exhaust!

Scavenge is followed with modern wave charging.

The future of high efficiency exhaust designs!

Wave charging (using high energy exhaust gases to compress intake air) was first designed and patented for diesel engines around 1916. Many designs and patents have followed over the years as sealing problems, incompatibility with any form of exhaust back pressure (muffler or catalytic converter), and major design changes became necessary to allow its use on gasoline engines (low throttle bypass valving, intercooling, and critical mixture compensation controls) resulted in a less than desirable horsepower adder for the street. Intake charge boosts of up to 40psi were limited to narrow power bands, narrow operating temperature ranges, and off road applications.

Enter the Acoustic Super Charger® exhaust

The Acoustic Super Charger® exhaust uses a two step process to improve performance: 1) scavenge is used to remove burnt gases, & 2) wave charging is used to compress free radicals and fresh air into combustion chambers. Where centrifugal, roots and screw compressors rob crankshaft power, or turbo chargers create back pressure, the Acoustic Super Charger® exhaust reduces back pressure and improves cylinder pressure without loading the crankshaft. Where roots and screw compressors boost low end, or centrifugal and turbo chargers boost only top end, the Acoustic Super Charger® exhaust introduces multiple power bands to boost low, mid range and top end. Where all super and turbo chargers are expensive, heavy and increase engine temperatures, the Acoustic Super Charger® exhaust is inexpensive, adds no weight, and actually reduces engine temperatures.

Low end: Big Block power: Wave charging following scavenge allows hot exhaust gases to push unburned air/fuel back into the engine, filling the combustion chamber with a high energy mixture.

Mid range: BIG Block power: Wave charging following scavenge produces a noticeable benefit at highway and normal operating rpms. Torque increases of up to 40% are common.

Power band enhancement: Power gains of 8% over conventional scavenge systems is common. Scavenge systems are converted to wave charging. Though tuned by means of equal length head pipes, to a particular rpm range, usually about 8,000 rpm, wave charging prevents overscavenge during resonant mode. Precious air/fuel is recycled, increasing dynamic cylinder pressure and decreasing exhaust emissions of unburned air/fuel (HC). No mixture change is necessary for normal operation. The Acoustic Super Charger® effect is so great that optimum power usually results when the mixture is leaned out and the timing advanced 2 – 4 degrees!

Top end: Unending top end: If your engine can take the rpm, the Acoustic Super Charger® exhaust can give you the power you want. Back pressure is reduced: Crossectional area does not have to increase, so there is little slowing of the exhaust pulse. Pulse velocity stays high. The exhaust pulses can get out of the system in time for the next scavenge and wave compression cycle.

Long Duration Cams: Are no longer needed. No need to increase exhaust duration and rob power stroke duration and efficiency. Your engine runs cooler, pulls stronger, lasts longer. No combustion energy is wasted pushing exhaust out of a scavenge exhaust. Normally wasted combustion energy is converted to crankshaft horsepower.

Catalytic Converters: Restrict exhaust flow, increasing back pressure, and reduce scavenge. But, the Acoustic Super Charger® exhaust reduces traditional scavenge induced back pressure and air/fuel overscavenge, thereby compensating for converter back pressure and preventing heat damage to converters. Converters and the Acoustic Super Charger® exhaust can co-exist in a high performance, high efficiency, and emissions legal environment. No need to strip off converters and install MIL eliminators. No reason to risk vehicle seizure for smog violations. Acoustic Super Charger® exhaust is the hassle-free performance answer.