I just phoned CIS to tell them I will be having a new exhaust and decat fitted but when I phoned I was told that I couldnt do it over the phone and would have to write to them. They said that it shouldnt really affect the premium even if it does increase BHP and that I would be OK to fit it before I sent them the letter. I was just wondering whether or not this is correct in that you cant do it over the phone as I was told something else on the phone once which gave the impression that you could do it all on the phone.
Has anyone else ever had to declare mods to CIS and if so did you have to write to them and was there any increase in your premium?
Do you think I will be OK, as they said on the phone, to fit the exhaust before writing to them?