Full-Race: Focus RS 2.3L twin scroll turbo kit, front mount intercooler and aluminum charge pipes, 3” turbo back dual exhaust system, 3” cold-air intake system, crankcase catch can
Wavetrac front differential (LSD)
The DriveShaft Shop upgraded CV axles and 1 piece carbon driveshaft
BorgWarner EFR 76/70 internal wastegate turbocharger
The $25,865 upgrade increased the performance of the stock Corvette’s 240 horsepower to 382 horsepower and 586 ft-lbs of torque. The seller says this 1988 Callaway is actually 480 hp thanks to special performance changes which include an increase in turbo boost, a true dual exhaust system with Flowmasters and a high-flow K&N air filter.
And this is where we get into the meat and potatoes. As with all Focus RS Models, this one is also equipped with that derived 2.3-liter EcoBoost. But, Full Race has put some serious wrench time in to pick up where Ford left off on the performance front. To start off, this RS gets a new Full-Race twin-scroll turbo kit that comes complete with a new front mount intercooler and aluminum charge pipes. But, they didn’t stop there. There’s also a new three-inch, turbo-back, dual exhaust system to match the new three-inch cold-air intake system.
Some of the exhaust systems we have include an H-pipe or an X-pipe, because adding such a pipe to a dual exhaust system has been proven to unleash more horsepower. When two close firing cylinders are exhausting on one cylinder bank, nothing is happening in the other bank, so connecting both pipes effectively enlarges the exhaust system, allowing these exhaust pulses to exit through both sides of the system. Exhaust flow is increased because both cylinder banks make use of both sides of the exhaust system, and increased exhaust flow equals more power.