I see all of these MFG coming out with new tuners for the HHR SS but the only one that catches my eye is the BSR I thinkl they dynoed 272 hp at the wheels as compared to the PPC 249 hp at the wheels. I wonder why theres such a spread there in numbers any input???? The BSR tuned car was like .5 seconds quicker in the 1/4 . .5 seconds in the racing world is an ass kickin pertty bad.

spread difference could be that the ppc numbers are for an automatic solistice

Heres a 5 speed BSR is still faster


http://www.dragtimes.com/Chevrolet-HHR-Timeslip-15018.html

Heres a 5 speed BSR is still faster


http://www.dragtimes.com/Chevrolet-HHR-Timeslip-15018.html

Why does it say 247-250 hp @ wheels on your link you provided that is same as PPC. Not meaning to start anything just pointing it out.

I see all of these MFG coming out with new tuners for the HHR SS but the only one that catches my eye is the BSR I thinkl they dynoed 272 hp at the wheels as compared to the PPC 249 hp at the wheels. I wonder why theres such a spread there in numbers any input????

Same car?
Same transmission?
Same dyno?
Same day?

The big one is the dyno, you should look for comparison runs on the same brand and look for SAE adjusted numbers.

Same car?
Same transmission?
Same dyno?
Same day?

The big one is the dyno, you should look for comparison runs on the same brand and look for SAE adjusted numbers.

And "marketing adjusted" numbers :-(