Journal

BC Tuning's Autocross Prepared Subaru Impreza 2.5 RS

Cory Davis is known by many names: BC Tuning, Black Cory, The African Stig; just to name a few. Call him what you will but in Reno, NV he's known as the best damn mechanic around. Cory can be found at KSpeed Automotive wrenching on any and everything, but his expertise is in Subarus and this is his personal autocross-prepared 2.5 RS. 





Cory races the SCCA's Solo discipline in the D Street Prepared class which limits the modifications he can do to the stock naturally aspirated 2.5 liter flat 4. Breathing is done through a KS Tech cold air intake, Borla header, and a Stromung twin tip cat back exhaust. Other modifications include an Unorthodox lightweight pulley set, Rallitek spark plug wires, and Bosch platinum spark plugs. The somewhat underwhelming power is transferred through an Exedy stage 1 clutch and 12 pound flywheel.

 Being fast through the cones isn't an exercise in brute force, rather finesse and balance. Cory has customized and aligned the suspension for maximum grip while dancing left and right. Tein Flex coil-overs with rear Bakemono camber plates help keep the car settled along with Hotchkiss adjustable rear lateral links, a Cusco 24 mm adjustable rear sway bar, Whiteline HD sway bar mounts and end links, and topped off with a genuine FHI carbon fiber front strut bar.

Grip is the name of the game

The unrivaled traction of the all wheel drive layout has been exploited with some serious meat. Stock fenders have been rolled and pulled to clear the beefy 265-width Dunlop Star Specs mounted on 17x8 OZ Ultraleggeras. Stopping power is provided by Stoptech 328 big brakes up front and WRX rear 2 pots.

Rare parts on a race car

Exterior modifications have been kept to a minimum but by no means understated. A few JDM bits and a vortex generator have been combined with a rare piece coveted by many Subiphiles. Mounted on the trunk is a genuine Prodrive RB5 spoiler, which was developed in the wind tunnel for Richard Burns' rally car. This spoiler came stock on the limited edition RB5 WRX models which were released in 1999 when Burns' replaced Colin McRae on the Subaru World Rally Team.


The cockpit is all business. A 4 point Autopower roll bar has been welded in to add structural rigidity and create a mount for the 5 point RJS harnesses. The sole passenger gets to enjoy the style and comfort of a JDM "Tiger Stripe" WRX seat while the hot seat is a Cobra Suzuka. Driver inputs go through a Sparco 325 steering wheel and a Kartboy short shifter. The gauge display is a JDM V6 STi unit.

Marks of a seasoned veteran


As impressive as this finely tuned RS is the tightly-wound nut behind the wheel is what wins races. More notably Cory has been awarded "Rookie of the Year", "Most Improved", as well as a class champ in past seasons. He's currently 22 points ahead of the second place driver in his class and 7th overall in the Reno region.


When asked about future racing goals Cory said, "I want first in PAX for sure, and I'd like to start competing in (National) Tour events, time and money permitting". He also wants to continue developing the car. Reportedly the RS is now wider with even more tire!

This won't be the last time you see Cory or his RS on AD.