The 2015 Dodge Challenger SRT Hellcat is the most powerful muscle car of all time, with a supercharged 6.2L Hellcat Hemi producing a bone chilling 707 horsepower and 650 lb-ft of torque, according to the official marketing materials.
From the time that the first media outlets got hold of the Hellcat Challenger, it looked as though the 707/650 figures were a bit underrated; and the owner of the 2015 Challenger SRT Hellcat in the video below wanted to see just how much power his new Mopar muscle car made in stock form, so he took it to a dyno shop for a baseline dyno run and for tuning – tuning which turned out some incredible numbers.
The 2015 Dodge Challenger SRT Hellcat shown below in Sublime Green is owned by Ohio resident John Michael Hansen. Mr. Hansen is no stranger to high performance vehicles; his current garage is occupied by a Jeep Grand Cherokee SRT, a built Lancer Evolution X, a built Nissan GTR, a built MKIV Toyota Supra, and a supercharged Ram 1500 SRT10.
Aside from the Jeep, all of John’s cars are modified and all of them are supercharged, so it should come as no surprise that this horsepower junkie was one of the first people in line when the 2015 Challenger Hellcat went on sale.
Once Mr. Hansen took delivery of his 2015 Dodge Challenger SRT Hellcat, he took it to Accelerated Performance to see just how much power it made in factory stock form. The 2015 Hellcat Challenger in the video below made 646 horsepower and 585lb-ft of torque at the rear wheels; considering the official power numbers of 707hp and 650lb-ft of torque at the crankshaft, Hansen’s Hellcat is losing only about 9% of the power between the engine and the wheels, which is a clear indication that the car is indeed underrated or that the Hellcat Challenger has an extremely efficient automatic transmission, as most self-shifting cars lose at least 12% of their power at the wheels.
After getting a baseline dyno reading on his 2015 Dodge Challenger SRT Hellcat, John Michael Hansen had Torrie McPhail of Unleashed Tuning see how much extra power they could squeeze from the stock Hellcat. Using an HPTuners tuning tool, McPhail was able to increase the output at the wheels from 646hp and 585lb-ft of torque to 680 horsepower and 616 torque.
With no other modifications, simply tuning the stock computer to optimize performance allowed Mr. Hansen’s Hellcat Challenger to pick up 34 horsepower and 31 lb-ft of torque at the rear wheels. Provided that we use the somewhat comical 9% drivetrain loss that we calculated above, this Challenger is making no less than 740 horsepower and 671 lb-ft of torque at the motor…from a car with no modifications and a simple engine computer tune.
Those are high stock numbers to begin with, and amazing tuned numbers for the 2015 Dodge Challenger SRT Hellcat; and with Mr. Hansen planning to do more to his new Mopar muscle car, we could see even bigger numbers from this Sublime beast in the coming months. In the meantime, crank up your speakers and fall in love with the roar of this tuned Hellcat on the dyno.
Read more at: http://allparnews.com/index.php/2015/03/hellcat-challenger-picks-up-34whp-with-only-a-tune-video-28067
