Since the release of the LS1 engine in the Pontiac GTO, the hearts of performance enthusiasts pounded for an engine enhancement system that would not only deliver a tidal wave of torque, but also unleash the true horsepower potential of the LS1 and LS2 engines.

Right from the start, APS set out to simply annihilate the project 427 C5R Monaro and with over 25 years of turbocharging and intercooling experience, APS has produced what is arguably the ultimate intercooled twin turbo system for the GTO.

A straight forward bolt on totally engineered system that utilizes the latest in water cooled dual ball bearing turbocharger technology and with the industry's largest bar and plate intercooler, APS delivers a system that results in outrageous power and torque right across the entire RPM range.

With insane horsepower and monster torque (over double the torque at 3,500 rpm), the APS Intercooled Twin Turbo High Output System performs like a strong 9L Big Block and raises the GTO performance enthusiast exclusively into the supercar club with 11 second quarter mile performance on street tyres!

With APS production components of equal to or higher than factory quality and specification, the look and feel of the APS Intercooled Twin Turbo system is one that screams the professionalism that APS High Output Systems are renowned for.

Lift the bonnet and the engine bay looks neat and purposeful - a quantum leap over any turbocharger or supercharger systems available today - a signature of APS workmanship.

But great looks don't just stop there. At the business end under the engine bay is where all the action is.

High engine bay temperatures have always been the Achilles heel of forced induction engine performance. With each turbocharger tucked up under the chassis as shown above (shields removed), heat is channelled away from the engine compartment for high engine durability and consistently high engine performance. With the APS stealth Twin Turbo configuration, under bonnet air temperatures are a fraction of traditional turbocharger designs. Let's face it, nobody likes to wait for extended cool down periods, when you can simply turn around and line up for another screaming pass down the quarter mile track.

On the road, the APS stealth Intercooled Twin Turbo system is simply amazing. The acceleration from 2,000 rpm all the way to redline is just an awesome experience that only a few Twin Turbo Porsche owners have ever experienced in the past.

High engine performance also demands a huge mass flow rate of cool air. With twin cold air intakes, one for each turbocharger, the APS Intercooled Twin Turbo system delivers the goods. With a total cold air capacity that far exceeds the demands of the base APS Twin Turbo system, there's plenty of air flow in reserve for those who wish to build larger capacity engines (400 ci plus engines).

If the turbocharger can be described as the heart of the system, then the intercooler must surely be the "lungs"!! APS has designed and manufactured a custom configured, vertical flow high efficiency intercooler utilizing custom designed light weight cast aluminium end tanks. Extremely high flow rates and massive charge air temperature reduction - a level of performance that other manufacturers can only aspire to achieve.

With a huge 21" x 10" x 6" drag race specification bar and plate core, at 900 hp flywheel, the pressure drop is less than 1 psi. At the same turbocharger flow conditions, the intercooler outlet temperature is less than 60°F higher than ambient, at any vehicle speed over 60 mph. Truly outstanding results at such a huge horsepower level. So just like the APS turbochargers and twin cold air intakes, the APS intercooler system has massive additional headroom available for even higher power levels.

The true dual entry design of the APS intercooler system allows for the ultimate in true equal length balanced ducting from each turbocharger to the intercooler. This ensures the optimum utilisation of the intercooler core by spreading the charge air from each turbocharger evenly across the entire intercooler core - This is efficiency at its best!

The end result? Insane horsepower and monster torque (over double the torque by 3,500 rpm). The APS Intercooled Twin Turbo High Output System performs like a strong 9L Big Block and raises the LS1 performance enthusiast exclusively into the supercar club with 11 second quarter mile performance on street tyres! Are you ready for the ride of your life?