Originally Posted by
Rick
You can compare a hub dyno to a hub dyno, but nothing else. They are great for tuning and development because they rule out tire distortion as slip. As an example a Porsche i tune makes 526 at the hubs and 537 at the flywheel. Wheel power is at 443bhp on the Dyno.
Here, I am saying that a true 300bhp on a properly strapped Dyno Dynamics type Dyno is rare. I am saying this because i have dyno'd a lot - that are claiming over this - that do not make it. Surely you can understand that this is evidence to support it?
The car i have here now is making 247bhp, but it is only holding 0.6 bar at 6k so it is not a great example. I will slacken the straps shortly and see what the difference is.
Rick
I was present when a Mk2 rs was run at 400hp correctly and lossend straps helped it make 425hp and then went to another rr and made 450hp. It's still a 400hp car in my eyes and the map was pretty poor.
One of the main reasons I don't touch them is the industry that is around them and how the are modded.
It's easy to make more than they should but it's called living on the knock sensor and falling fuel pressure with pumps running out of flow. The owners don't know any better and the tuners should know better.
Mark