So how'd it do? The STS rear-mount turbo fared well on CP Racing's Dyno Dynamics chassis dyno, which, for this test, presented data based on a Dynojet scale. We witnessed baseline (without turbo system) performance of 271.7 hp and 309 lb-ft of torque, which isn't too bad in its own right for a stock-head, stock-lower-end engine with only an intake manifold, headers, and a few other bolt-ons.
With Eric Oram spooling the turbo to nearly 8 pounds of boost, 423.3 hp and 469 lb-ft of torque were the impressive rear-wheel results-especially the torque gain.
It's critical to note that this engine and turbo combination are tuned for 93-octane pump gas. Boost isn't even close to set-on-kill levels, and air/fuel ratios averaged in the 11.7:1 range during the turbo pulls. Doug has plenty of room to turn this thing up when he gets an engine that will support it. But for now, getting the tires roasting will be the least of his worries-the Goodyears went into a full-on haze when Doug rolled into more throttle at 70 mph-when he hits the drift circuit in search of another championship.
 |  This is the regulator for...  This is the regulator for the all-important boost controller. Doug uses STS's EBC-15 electronic controller, which features a high and a low setting. The controller is capable of up to 15 psi above the base boost. So Doug can be cruising around at 7 psi, flip the switch on the fly, and get kicked in the back with anywhere from 8 to 22 total psi of turbo boost. |  CP Racing's Bobby Young crafted...  CP Racing's Bobby Young crafted the STS-provided tubing into the custom-fit masterpiece seen here. |
 |  Doug designed this cold-air...  Doug designed this cold-air induction system in which air is pulled through NACA ducts installed in the modified body scoops on each side of the Mustang and routed into the custom-fabricated airbox covering the conical air-filter element in the trunk. | |
You still haven't figured it out? You're still unclear about the criteria we use as a guideline for a Mustang's magazine worthiness? Show us something new, different, and cool like this turbo 'Stang, and your chances will be a lot better than if you say to an editor, "I want you to put my car in the magazine." We actually thought we were hearing things when we learned about a rear-mount turbo going under a '99 Mustang. But after seeing CPR's handiwork with the new concept from STS and watching its boost blister the dyno, all we can say is power at the back wheels has taken on a whole new meaning. Check it!