Hello and welcome
Always nice to see more 9n owners! (or soon to be
)
Yes you can get a 1.2 remapped, do a bit of looking around. I believe you wont see huge gains and just about everyone will tell you (which you don't have to pay any attention to may i note) that it's not worth trying to get more power out of the 1.2 engine etc etc and to get a bigger engine.
Again that applys to the air filters. Though when i put a K&N air filter in my old 1.2 9n (65) i noticed (v.barely) a bit of response however my fuel consumption improved with the new air filter which was a better bonus for me.
The alloys will fit, just get the right tyre sizes believe the most recommended for 17's are 205/40/17 . The stud pattern of the 9n is 5x100 which is the same as the mk4 golf. The mk5 golf is 5x112 which wont fit without adaptors!
Check out the DIY sections and have a bit of a browse through members rides and this section of the forum for mods
Hope this helps
