I just bought a 2010 mks. I am very new to these cars. So please be kind! Cause I have a couple of questions about increasing the performance. So here goes. First- is there any difference as far as performance parts go IE fitment issues compared to the SHO? This may seem like a dumb question but when you look up parts for mks not a lot shows up, but when u look up SHO parts a ton come up and mks is listed as will fit. Second- is the use of the flash tuner/power programmers. I live in NJ and the weather sucks so can I jump from say a stage 4+ tune back down to a 1 or 2 so I can get to work in the snow if need be? Again I’m new to these cars and modern tuners. The last car I tuned was a 99 mustang gt in 2002. So don’t be too harsh.