There's quite a lengthy FAQ with all the typical questions. Of course, the answers are provided by the seller, so buyer beware. But it seems the intent is to offer reversible tuning that leaves no impact or SW footprint on the car. Although, I'd expect the car to record some shenanigans when you fiddle around with this stuff.These are just about Focus RS numbers, and both run the 2.3T EB. How much of the RS's bill of material is different from our engine?