53' 172 Cup
I have just got my RS Tuner from Fastchips today and am about to install it. I have been told i need to install a patch as i have XP. can someone who has this explain how i go about getting the correct map for my car and also if i will use Write ECU function or Write Cal (in the user manual it says you can use either depending on certain info about you cars ECU etc)
Cheers!
Cheers!