I didn't realize they were both only gmpp kits. I thought the hhr was tuned and the cobalt was the gmpp kit. it makes sense that the hhr got beat now. the hhr is about 300lbs heavier than the ss/tc coupe.

 

Common misconception, the drag coeffecient of a HHR SS is almost as good as a Corvette. True fact.

Now weight wise a Cobalt SS/TC has a 300 lb advantage which should be good for around 2-3 tenths better time in the 1/4 mile, with all things being the same minus weight.

 

hhr is trifected. but he has tune stock gm tune and selection.

we did 4 rolls
fisrt is gm vs gm.
second is tft vs gm.
third is gm vs gm
fourth is tft vs gm

 

Ill stick to my HPtune and nobody will steer me toward Trifecta. No thanks