Yeah, that was a really great article, wasn't it? It sounds like they are very serious and diligent about testing. I think what sets them apart from most tuner testers is that they have the budget to put together a top quality test system, and the expertise to run it. You could easily sink a million dollars into a test cell, something most tuners simply can't do.

Most of the test cells I work with are quite sophisticated. We have full control over all sorts of variables, such as intake air temperature, humidity, ambient temperature, coolant temp, oil temp, electrical loading, exhaust back pressure, and in some cases even barometric pressure. Plus most of our dynamometers and controllers are highly responsive and capable of doing full road load simulation, transient as well as steady state testing. I don't do too much stuff on chassis dynos these days. I mostly work with dynos connected directly to the engine, powertrain, or transmission. This is nice, as repeatability is great, but then you do have added complication of things like vehicle simulation, transmission simulation, torque pulse simulation, and having the computer drive the vehicle like a human would. Still it lets us do a lot of really cool things before an engine even gets into a vehicle.


http://www.ats.horiba.com/