Upsolute only does German cars... VW, Audi, BMW, Porche, MB and now the Crossfire. My guess is that the remapping is more than likely pretty close to the same as Powerchip. The up side (no pun intended) is that with Upsolute, in most cases, you have a local rep to take your car to. If I'm not mistaken with the Powerchip you have to pull your ECU and send it to them and they send it back. My HP numbers are looking just a tad better but our fuel mileage is about the same.