CXRacing designed its Fox twin-turbo system for ’86-’93 ’Stangs, which were equipped with airboxes and thus had natural openings in the passenger-side inner fenders to serve as locations where discharge tubes can be routed from the turbo, and also from the intercooler to the throttle body. With Greg’s coupe being an ’84 that originally had a carburetor, the appropriate cuts were warranted. Determining exactly where to clearance the panel is a trial-and-error process in which Rene mounts, clocks, makes reference marks, and remounts the turbo several times to ensure correct positioning all around.
Ascension bores a passage in the driver-side framerail for that turbo’s discharge pipe, which, like its passenger-side counterpart’s tube, also is plumbed into the intercooler. While CX’s twins system is designed for ’Stangs that still have full accessories (air conditioning, power steering, and so on), a Pony’s battery must be relocated to the trunk or hatch area.
Ascension mock-fits CXRacing’s bolt-in air-to-air intercooler at the front of our test ’Stang. The bar-and-plate ‘cooler features a 3.5-inch core, measures 27x12.5x3.5 inches, and is specifically designed with two 2.5-inch inlets for discharged air from the Fox system’s twin GT35 turbos. All of the aluminum tubing is mandrel-bent, including the large 3-inch discharge pipe from the intercooler to the throttle body. All clamps, silicone hoses, and a blow-off valve also are included with the intercooler.