When Texas driver Feras Qartoumy shipped his carbon-bodied C6 Corvette halfway across the globe to compete at the 2025 Yokohama World Time Attack Challenge (WTAC) in Sydney, Australia, he carried both determination and experience from a near miss the year prior. This time, he returned with twin Garrett G-Series G35-1050 turbos supplying more air into his 427cu (7 Liter) Late Model Engines-built LS-based engine. The result: a blistering 1:23.269 lap that secured 1st place in the Plazmaman Pro-Am Class and set a new benchmark at Sydney Motorsport Park for the class.

With an estimated 1,300 horsepower on tap, controlled by Garrett GVW-45 wastegates and GVB-50A blow-off valves, Qartoumy’s Corvette isn’t just fast, but reliable — delivering the consistency and pace needed to claim the top step of the podium.

From Texas to the Top of WTAC

Qartoumy’s journey into motorsport has been one of steady progression and ambition. Based in Texas, he first cut his teeth in local racing with a 1972 LS-swapped Nova before realizing the chassis was not competitive enough to go further. By 2016, his focus had shifted to developing a heavily modified Chevrolet Corvette C6 Z06, which would go on to become one of the most competitive cars in North America on the time attack circuit.

The breakthrough came in 2020, when the newly turbocharged Corvette made its debut and immediately set a Track Modified record at Gridlife’s Gingerman Raceway. From there, the pace and reputation only grew. Qartoumy has since collected 29 records, earned a victory at WTAC 2023 and Attack Tsukuba win in Japan in 2024.

For Qartoumy, racing in Australia is more than chasing a title. It’s about proving that a privateer from Texas can compete — and win — on the world’s biggest time attack stage.

Full-Circle with Garrett Power

One of the most remarkable aspects of this story is Qartoumy’s relationship with Garrett Motion. Years ago, he claimed his first Garrett turbocharger as a prize at Super Lap Battle while still running a naturally aspirated setup in the very same car. That prized turbo evolved into a full twin-turbo program running Garrett G-Series G35-900s, and today his Corvette runs twin Garrett G-Series G35-1050s, paired with GVW wastegates and GVB blow-off valves for ultimate boost control.

From prize to podium, the journey underscores the reliability and performance that Garrett products bring to grassroots racers and help elevate them into world-class competitors.

The 2025 WTAC Victory

At the 2024 WTAC, Qartoumy narrowly missed the Pro-Am win with a 1:25.45 lap, finishing second behind the Finnish R8 1:1. Rather than overhauling his Corvette, Qartoumy spent the next year refining its setup — focusing on suspension geometry, aero balance, and thermal efficiency. The strategy worked.

Returning in 2025, the Corvette delivered a 1:23.269 lap — a full two seconds quicker than the previous year — to take the Plazmaman Pro-Am record. Drawing on countless hours behind the wheel and a background as a former off-road fabricator and chassis builder, Qartoumy showcased a car and driving style that delivered composure and consistency throughout the weekend.

Looking Ahead

With his 2025 WTAC Pro-Am victory secured, Qartoumy has further cemented his reputation as a global time attack contender. From Texas to all around the USA, to Tsukuba to Sydney, his Corvette continues to push the limits of what’s possible in the discipline. The focus now shifts to defending his crown — and perhaps even challenging outright records in the seasons ahead.

Specifications

VEHICLE: Chevrolet Corvette C6

ENGINE: V8 platform (turbocharged)

TURBO SYSTEM: Garrett Series G35-1050 twin-turbo setup 

WASTEGATE/BOV: Garrett GVW-45 + GVB-50A 

POWER: 1,300hp

USAGE: Time Attack (WTAC – Pro-Am Class)