NEWS: 2015 HELLION MUSTANG

Forget the Hellcat, Hellion Power Systems turns the latest 5.0 Mustang into the king of the jungle

If you have been following the 2015 Mustang development race, you have been bombarded by the race to develop new products and set new milestones. However, one milestone that seemed worthy of revisiting wasHellion Power Systems’ news that it took the stock 2015 Coyote engine to just shy of 950 rear-wheel horsepower with its freshly designed Eliminator twin-turbo kits.

Starting with a stock 2015 Mustang just weeks before The SEMA Show, Hellion Power Systems’ John Urist created this kit and it really works. They had to rush the tune to get it ready for The SEMA Show and it still made 750 at the wheels. After Blow-By Racing had the chance to refine the tuning remotely, the turbos really took advantage of the new and improved Coyote.

Before the show, the car was already impressing us all by putting down 750 to the Nitto tires, but John John Urist of Hellion Power Systems was certain there was more left in this combo. Given more time to refine the combination, that certainly was the case.

“We left SEMA and we knew we needed more dyno time,” he explained. “The first tune was rushed for the show, but using datalogs from The Dyno Edge,Blow-By Racing was able to make the necessary tuning changes.”

Running about 17 degrees of total timing and burning a mixture of 93-octane pump gas and 100-octane Torco unleaded to provide a safety net, the combo put down the aforementioned 949 rear-wheel horsepower and 820 lb-ft of torque. With this setup, the knock sensors never came on during the pull:

Making this happen was the Hellion kit, which John designed to fit cleanly and install easily. He says this kit is an easy driveway install that requires no cutting.

Sure, you know an engine with two turbos will make some power, but would you expect a stock 5.0-liter engine to lay down nearly 950 horsepower to the wheels? Even more impressive, the Hellion car is an automatic, so a manual-trans car should make even more power.

“The biggest thing for me is to have the best OE-appearing system on the market. It looks like the factory put it on,” John said. “We only do turbo systems. We only make kits, so we pulled from all of our older systems and applied to this kit to make a quick-installing, ergonomic, powerful system for the new engines.”

The kit features two Precision 62mm turbos, two TurbosmartVeePort blow-off valves, and two Turbosmart 40mm wastegates. A boost controller will be optional, but if you plan on turning it up higher than this, you might want to have a built motor on deck.

In this application, the stock fuel system is bolstered by a set of 42 lb/hr injectors and JMS Chip & Performance’s plug-and-play PowerMax fuel pump booster. The car also wears one of Bassani Xhaust’s 2 ½-inch cat-back systems. John believes a 3-inch system will allow for even bigger gains, so Bassani is developing such a cat-back.

“The system is everything we expected,” John said. “It is going into production—with several turbo options—and we are hoping to ship it in January.”

Hellion’s John Urist reports that system for the new Mustang is a simple installation. He also takes pride in the fit and finish of the system. For example, even thought the stock coolant overflow tank is relocated to make room for the turbos, it retains the unaltered factory hoses. As you can see, installing this kit does necessitate swapping the factory cooling fan with a slim-line electric unit, which will be part of the kit.

Some people have doubted the power this combo made, but we were able to get our hands on the dyno graph. As you can see the S550 Coyote eats up the turbo boost, which tops out at 16.5 pounds. The power climbs smoothly and peaks at nearly 950 horsepower and torque gets north of 820 lb-ft—at the wheels!

Taking a closer look at the numbers in the lower resolution form of a chart shows that the turbos start doing their work in the midrange and pulling hard all the way till the end on their way to generating nearly two and a half times rear-wheel output of a stock 2015 5.0 engine.