• Choose the STS twin turbo unit for Corvette, for two key reasons: space and temperature.
• A cooler intake charge for the engine, due to the inherent intercooling effect of the longer tubing.
• STS twin turbo system  is street legal.

  When you're talking about a high velocity Corvette, it's not whether you complete it on time, but how fast you can pass by those road markers once it's done.

The STS Turbo Systems kit, which mounts a twin turbo remotely near the tailpipe, replacing the stock mufflers. You should choose the STS twin turbo unit for two key reasons: space and temperature. There's not a lot of room under the hood,and you don't want to try to cram a twin turbo in there. Not only that, it can generate a lot of heat. People have seen turbo housings glow cherry red from running hard on the track, and you don't want that in the engine bay, melting wires, hoses, or other components.

STS claims a reduction in heat by as much as 500 degrees at the twin turbo, eliminating the need for a turbo timer to prevent cooking the bearings. A twin turbo being mounted farther downstream in the exhaust system, the STS unit has a few other advantages as well, such as ease of installation, about a day for a moderately experienced wrench, using standard shop tools. In addition, the rear mounted twin turbo acts as a muffler, creating a special sound that is completely different from the typical huffing and rattling of a blow off valve.

Other STS twin turbo benefits include a cooler intake charge for the engine, due to the inherent intercooling effect of the longer tubing, and the fact that no special headers or other exhaust components are required. In addition, the twin turbo system improves on the front/rear balance by putting more weight near the back end. Factoring in the poundage removed by the elimination of the factory mufflers, the total increase in weight of an STS system is about 125 to 150 pounds.

Selection of the STS twin turbo system is contingent on one thing, the kit is street legal. While some Corvette tuners might sneer at that requirement, STS principal Rick Squires agreed with them. Getting a CARB E.O. number for an aftermarket power adder can be a daunting task, but the process was vital to the company's marketing plans for the C5 system.

The results are impressive. With a dual boost controller, you can dial in anywhere from 5 to 8 psi on the twin turbo, good for as much as 558 hp at the wheels, around 657 hp at the flywheel, assuming a 15 to 17 percent loss from the driveline.

The twin turbo ZO6 promptly headed for the track at Willow Springs, and without breaking a sweat, trounced both a Mustang and a Mitsubishi Evo. The driver particularly liked the way the STS twin turbo system maintained boost pressure in the exhaust pipes, so there was little if any turbo lag when accelerating out of the curves.

They say power corrupts, but in the automotive world, it can be fiscally ruinous as well. Many an enthusiast has gotten upside down in a buildup, blindly adding more and more upgrades with no end in sight at least until the money runs out.