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Kenne Bell Supercharger Ford Mustang Install - Superbad
We Turn A Ho-Hum '04 GT Into A Superbly Bad Machine With A Kenne Bell 2.1l Supercharger.
The kit itself is complete, meaning everything is there to get the blower on the car, get it running, and make some power. KB offers three versions-6 psi (106 hp), 9 psi (160 hp), and 14 psi (262 hp). We chose the 9 psi version because that is the perfect amount of boost to run on the stock engine's rotating assembly before taking the chance of pushing the envelope and turning it into a taco salad. While it would have been nice to go with the 14 psi setup, that combination is a bit more than what the owner wanted.
Additionally, the kit comes with your choice of a polished or a black-coated 2.1L supercharger (we chose the black version) rated for up to 750 hp. Along with the compressor, the kit came with everything we needed-a bar and plate intercooler, Garrett heat exchanger, billet bypass valve, 36-pound injectors, 90mm throttle body, Kenne Bell Boost-A-Pump, and a tune from Kenne Bell to reflash the ECM and make it work with the supercharger.
Once the installation was complete, the computer was retuned, and everything triple checked to make sure there were no leaks or problems. The Stang was strapped back down to the dyno so we could see just what 9 psi from a Kenne Bell twin-screw would do for this hot rod. The car was fired up, and Chris Winter put the hammer down.
The rollers screamed, the blower whined, and the car sung at full song. Right off the bat, we knew there would be a serious power increase as the car took on a life of its own with a renewed sense of anger flowing from the tailpipes.
Thanks to the blower kit, the car pounded out 385 hp and 414 lb-ft of torque at the rear wheels. We quickly spun the calculators in our heads, and came up with a power increase of 133 hp and 132 lb-ft of torque-at the rear tires! Knowing more power was available at the plant of our right foot, we took the car back to Raceway Park to see what it would pick up in terms of elapsed time and trap speed. While we probably should have thrown on a set of sticky rear meats for ultimate traction, we wanted this to be a true A to B comparison, so we kept the car as it was (rear tires included) for our after testing.
Once again, Smith did the driving duties, and after banging the gears and blowing through the quarter-mile timers, the scoreboard validated our dyno numbers. The red rocket ripped off a 12.54 at 115 mph. The extra power afforded by the blower tacked on 16 mph and lowered the elapsed time an astounding 1.35 seconds. While the 12.54 is a respectable number, the 115 mph trap speed indicates the car has a lot of e.t.'s left in there. A swap over to sticky drag radials or slicks would most definitely aid the car in lowering the elapsed times, as a more aggressive launch and a better 60-foot clocking would result.
When all was said and done, this run-of-the-mill Mustang GT was turned into one superbad Pony thanks to a Kenne Bell twin-screw blower. Who knows, maybe 14 psi, a set of rear meats, and some killer power numbers and track times are in this Mustang's future.