A true bolt-on 3.5" turbo to tip race exhaust Crafted in premium 304 stainless steel and designed for 600+ horsepower. Minimal exhaust back pressure, fast turbocharger spool-up and maximum horsepower is guaranteed.

The APS DR Series 3.5" Turbo to Tip Race Exhaust is a true 3.5" internal diameter exhaust system through each and every section. By utilizing the latest technology precision mandrel bends with the smallest possible bend angles spread over the maximum possible length, optimum exhaust gas flow minimum exhaust back pressure is achieved. By dissipating the hot exhaust gasses more efficiently, the APS DR Series race exhaust lowers the thermal load on vital engine components such as pistons, combustion chambers, valves etc., particularly at high horsepower levels. Another significant benefit of the DR Series race exhaust is better transfer of exhaust gas energy to the turbocharger which results in faster turbocharger spool-up and more efficient turbocharger operation at high power levels.

A great deal of development effort has also been put into accentuating a deep engine note - this exhaust is not for the faint hearted and guaranteed to excite!

The comprehensive APS DR Series 3.5" Turbo to Tip Race Exhaust system includes 3.5" internal diameter 304 grade down pipe, 304 grade 3.5" internal diameter intermediate pipe, Highly polished 304 grade 3.5" muffler and tip assembly, all mounting hardware, gaskets, stud, nuts etc. for easy installation.

Optimum gas flow and minimal exhaust back pressure is essential for high power. The APS high output stainless steel exhaust system really performs. Crafted in premium 304 stainless steel the APS system is designed to perform at the most extreme power levels.

Careful attention to tube diameter, smooth radius mandrel bends and muffler design is essential for high performance. With 20 years of experience in exhaust system design, APS have built a superb exhaust system.

Careful attention has also been paid to exhaust noise and note without compromising outright performance. A strong but subdued exhaust note with little or no drone at highway cruise and well matched to the dynamics of the EVO.

The APS High Output Exhaust System generates a distinctive sporty exhaust note, lifts both torque and power levels across the entire RPM range, is quick to install and the logical place to start if you desire higher performance from the Lancer Evolution.

APS Exhaust systems are engineered as complete systems including every nut, bolt and gasket required for installation.

With the huge air flow capacity of the turbocharger utilized in the Lancer, the unique APS High Volume Twin Vent Blow Off Valve delivers unsurpassed venting performance, excellent driveability and crisp turbocharger response in on/off throttle applications. A blow off valve is a device that releases pressure from the turbocharger when the throttle is released. It ensures that the pressure shock load on the turbocharger compressor is minimized and encourages the turbocharger rotating group to continue spinning during gear changes. This ensures that when the next gear is selected and the throttle re-applied, the turbocharger rapidly produces high boost pressure and strong torque.

With large turbochargers, releasing pressure from the turbine compressor wheel when the throttle is snapped shut is critical not only for turbocharger response, but for turbocharger longevity. A huge volume of air must be passed through the blow off valve as soon as the throttle is closed. Most blow off valves have limitations in their design that inhibit the level of performance demanded by APS. Piston/bore diameter and venting ports are often too small and surprisingly, most will not fully expose the exhaust ports when fully opened.

APS designed the APS high volume twin vent blow off valve specifically for the Lancer in high power states of engine tune.

A mammoth 1.417" (36 mm) internal bore size delivers huge capacity and at full piston travel, all ports are fully exposed for maximum blow off volume.

The APS twin vent BOV features 30 micron hard anodized, T6 billet aluminium body, low friction bronze piston, all stainless steel hardware including spring and Viton 'O' rings.

The large primary vent is designed to plumb back into the inlet tract and ensures the best driveability during cruise conditions. More importantly, the APS BOV cures the problems seen with after market 100% external venting blow off valves. And under spirited driving conditions with the turbocharger running high boost pressure levels, the APS twin vent blow off valve continues to vent through to the second stage port in order to expel the maximum amount of charge air possible. Fine adjustment to blow off valve operation can be performed through the actuation adjustment screw for optimum configuration.