The HPE550 upgrade from Hennessey
bumps the standard output 420 bhp and 460 lb-ft to 557 bhp and 542 lb-ft of torque. The kit will set you back $15,950 and will include an air-to-water intercooler system and a remapped engine ECU.
For an additional $6,950 clients can opt for the tuner's H10 20-inch forged monoblock wheels compatible with the Escalade's factory tires. Hennessey says these wheels have a lower rotating-mass which allows more power to reach the tires.
Full story at www.worldcarfans.com.