I remember reading the SS has upgraded front contol arms. I wonder if they addressed the geometry and more solid mounting points of the SS over the standard HHR to address the wheel hop.

Stiffer bushings help a lot. the give of the rubber in most suspesion are the main reason for wheel hop and geometry is the second.

 

I'm at 315 hp with 276whp and 286 fpt, dyno'd on Mon. the 22nd

 

Very good numbers...Is your a auto or stick? Will the charge pipe void the warrantee ya think? Where did you get the stuff? Thanks...Al