I am wondering if someone here is from around Columbus?
It seems as though power on my XKR is a bit down, however I see no faults, or engine lights coming up. It would be nice to take another XKR for a spin and compare the two, maybe it is just me.
I will go through used car dealer inventory as well, but you know how much fun going to used car dealers is...

 

any progress on your 'butt dyno' evaluation?

 

Have you tried adjusting the throttle cable? It gives you extra power. Seriously.

 

You should first of course make sure all is well with your car, but the XKR does get a bit slower in hot weather when the intercooler is less effective.

 

SRSLY? I will try anything once, I suppose changing pedal response would help reset my butt dyno. It is like making less resistive accelerator return spring on old Soviet Cars.