The 2018 Jeep Grand Cherokee Trackhawk – FCA’s Hellcat-powered crossover-turned-lethal-weapon – has launched in the US, with at least one example making its way to the tuning shop. Livernois Motorsports in Dearborn Heights, Michigan claims to be the first shop ever to tune the new, 707-horsepower Trackhawk, showing the results of their labor in a new video published to YouTube.
How did they fare? According to the dyno chart, Livernois Motorsport managed to nudge the Jeep Grand Cherokee Trackhawk’s power peak up by nearly 45 wheel horsepower, eking out an extra 65 lb-ft peak wheel torque. As always, those numbers don’t tell the whole story; there’s a nice, fat torque gain from about 2,700 to 4,700 rpm that you’d certainly feel in the seat of your pants.
Even more palatable: Livernois’ measured wheel power suggests that the engine is peaking at something like 760 horsepower at the crank.
Livernois Motorsports says it isn’t done yet playing around with the 2018 Jeep Grand Cherokee Trackhawk; the shop says their dyno testing shows “solid early gains,” but they’re still working on perfecting the tune for consumption by Trackhawk owners. If you’ve bought a Trackhawk, or you’re at least considering the prospect, this is a story you’ll certainly want to follow.