You'd need an ECU that can understand a WB02 signal, the Bosch ECU only understands narrow band, ie what its got.
Unless you're going to use a good custom ECU with good self tuning and a WB02 input, ie a megasquirt, (awaits anon comments to the contrary) AND you're going to map it yourself a WB02 won't be of use to you.
A rolling road will have an AFR sensor which they will use to map your car.