S90 & V90, V90CC (SPA: 2017 - )
this question is hypothetical, but I am curious to know its answer nevertheless.
I myself own a Volvo S90 T4 (petrol, 190 BHP). Is it possible to legally uptune the engine to obtain more BHP and torque ?
(This is a theoretical question, as I am not planning to do that even if it's...