HP at the wheels
What I see that a lot of people put a lot of "stuff" in their cars. That with the weight of the person itself can change this calculation significant.
I read the thread of last year around HP in the 996 section. What is to our opinion better: dyno at the wheels and assume that this is about 85% of the engine output, or measure straight at the flywheel and switch all the appliances off.
Do you know what kind of HP the airco and the heated seats take?

