It’s been quite a ride for the HHR SS. Introduced as a 2008 model late in 2007, the HHR SS was the first taste enthusiasts had of the potent turbocharged LNF powerplant outside of a roadster in the SKY/Solstice. Finally, 260hp of turbocharged 4-cylinder ECOtec power turned a retro-grocery getter into a serious drag strip competitor. Not only was the performance bottom line improved to help the HHR nameplate lay waste to the naysayers but the HHR SS also received a facelift with a new aggressive front and rear fascias, 18-inch wheels and a lower ride-height with help from a revised race-tuned suspension that kept the HHR SS firmly planted to the road during its record 8:43 lap around the Nurburgring Nordschleife - this certainly wasn’t your grandma’s station wagon.

Two weeks ago we had GM HPVO Design Systems Engineer Bill Duncan on GTMS to answer some questions that folks had posted across the various LNF Upgrade Update Posts We received some great response from all you guys out there about having a GM Engineer on here giving you some feedback on all your questions and concerns so we are lucky enough to welcome Bill back to the site to answer some more questions from the Cobalt SS Turbo owner community.