Two EVO X GSR’s, Two friends, Similar setups, different sets of cams, different downpipes, 875 combined wheel horsepower, one tuning shop.

In February, COBB Tuning Plano tuned James Stearns’ EVO X GSR running a Forced Performance “Red” turbocharger, it made good power gains over the stock turbo, but we knew the car had so much more potential. A set of good camshafts would be needed to make the car work with the bigger turbo more efficiently. A set of Kelford 214b cams were ordered knowing that they would do just the trick!

Not to be outdone by his good friend, James, Dustin Nelson decided to step it up and purchase a FP Red for his EVO X as well. Duston also upgraded to the COBB SS Downpipe and decided on the Cosworth MX-1 camshafts.

Both agreed to come drive up from the Bayou of southern Louisiana and drop off their cars for a few days, anticipating some very impressive gains. James started with 377whp and 361ft-lbs of torque, while Dustin’s car weighed-in with 331whp 378ft/lbs. After the installations, James was first up on the dyno and netted a gain of 57whp and 34 ft/lbs making this car the most powerful EVO X at COBB’s facilities in Plano at 434WHP and 395WTQ at 27psi on 93 octane gasoline!

That record would be short lived though, as 26 hours later, COBB Tuning Plano’s lead tuner, Calvin Dotson, made 441WHP and 393WTQ on the same boost pressure of 27 psi and on 93 octane out of Dustin’s Octane Blue Pearl EVO. This set a new bar of power achievement on any EVO X in COBB’s dyno database and netted 110whp over his previous setup!

Congratulations to these two guys, we bet the drive back home was incredible!