Originally Posted by Steve30
^ its true dynojets read higher because they are inertia dynos whereas a mustang is a load dyno and simulates driving on a road. btw i'm not sure if mustang dynos are calibrated and locked from the supplier but that may be a cause for reading higher. Dynojets on the other hand are calibrated and locked from the factory. Dynos shouldn't really be compared because there will ALWAYS be some variability, its just how the universe works. The best use is to compare you own cars previous performance to its current performance and even then its a bit iffy seeing as the same car can give is a range of hp readouts.
I completely understand how they work and why there are differences. That said most load bearing dynos can be calibrated. Regardless, no one will ever be able to convince me that one dyno reads higher or lower then another because it just doesn't mean jack to me. You cannot compare between dynos and blindly saying one style will always read high just is NOT true. I've seen it for myself on more then one occasion.
DJ cannot be calibrated because they measure by the time it takes to spin the drum which is a known the mass.
No one here needs to tell me how dyno's work I'm fully aware of how they work and why, I'm trying to correct an observation here about them always reading higher then a DJ. It's utter and complete BS and it's spread all over the internet.