Guy Fieri is no stranger to horsepower. He’s been collecting cars and trucks for almost as long as he’s been cooking. But the Mayor of Flavortown isn’t just into horsepower for fun. His stable of Duramax-powered trucks are workhorses, often towing toy haulers, boats, food prep, and rescue trailers.
Guy recently took his 2018 Denali 3500 HD to Cartronics in Santa Rosa, CA for some added power. The Cartonics team installed a Ram-Air cold air intake, 5″ Monster Exhaust with patented zero-backpressure SideKick tip, Derringer inline tuner with iDash DataMonster, PedalMonster throttle booster, and Ram-Air rear differential cover. Guy’s Denali gained 98 horsepower and much quicker throttle response. Watch his reaction.