 It's normally covered by the...  It's normally covered by the upper coolant hose and remains unseen, but here's a look at the bypass tube that's inserted into the hose to route coolant down to the turbochargers. |  With the turbos mounted under...  With the turbos mounted under the car, we asked Rick about the probability of the huffers ingesting road debris, causing serious damage to the turbo system and the engine. While this carbon-fiber bellypan serves as protection against such danger, Rick stresses that driving through floods isn't the smartest thing to do with a Heritage GT twin-turbo kit installed on your 'Stang. |  Chris connects the factory...  Chris connects the factory mass air wiring into the system's really cool carbon-fiber discharge tube. Unlike many power adders that require relocating the mass air sensor, there's no need to cut, splice, or modify the mass air harness, or relocate the sensor. It's all plug-and-play as the tube positions the mass air sensor so that it sits close enough to the harness and plug for an easy connection. |
 From up top, the Shelby GT's...  From up top, the Shelby GT's Three-Valve 4.6 looks super-stock, leaving no one the wiser about the twin-turbo fury that lurks below the surface of this hopped-up 'Stang. |  The Team Performance Heritage...  The Team Performance Heritage GT twin-turbo system is clean and stealthy, and it installs without any 'Stang modifications, other than removing a small section of the upper radiator hose to accomodate the supplied coolant bypass. | |
Data was captured with our '07 Shelby GT 'Stang strapped to the rollers of a Dynojet chassis dyno at Los Angeles Power Division before and after installing the Team Performance Products Heritage GT twin-turbo system.
After laying down an initial 282.22 rwhp and nearly 300 lb-ft of torque in the baseline test, the twin-boosted 'Stang showed its stuff when we revisited the dyno, churning peaks of 456.52 horses and 493.14 lb-ft of torque at the back tires using only 8 psi of boost. While the dyno session left us with no doubt that Team is onto something with its low-mount turbo setup, we also had a chance to feel the boosted performance of the otherwise-stock S197.
In a nutshell, boost is good. After a brief cruise through the streets of Simi Valley-with sporadic, tire-blazing boost blips where traffic permitted-we guided the Shelby to the 118 Freeway and let the twin turbos get busy. The power was smooth and hit instantly when the hammer dropped. Once the rear tires finally got a significant hold of the road, the speedometer display swung around beyond normalcy-and we were still in Third gear!