Stinger affordably augments truck muscle and durability with impressive best gains of +59 hp and +148 lb-ft (rear wheel), and 5% better mileage. PICKUP: Stinger makes fast work of brawny jobs, thanks to gains to +59 hp and +148 lb-ft torque. Sprint heavy loads up hills faster, in higher gear. Shave fuel costs with 5% better mileage. For a modest investment, you'll get years of great returns. Test vehicle: 1995 pickup with 5-speed manual trans. Solo vehicle weight: 6,200 lbs. Towing combined vehicle weight: 17,000 lbs. Horsepower and torque measured at rear wheels.