How will fitting the 52mm throttle body affect my insurance. I do not want to have invalid insurance do to not notifying the company of the change and as I'm in my 50's it shouldn't cahange too much should it?
They make no difference really unless you are bothering to do other mods - unless it is a 200vi.
Yes you should declare.
However, have you seen the difference?
One is black plastic, the 52mm is alloy silver.
Tiny aint it...
How about if yours stuck (Sticking throttle body can happy)
And you went to the scrapyard to get a cheap replacement (as the Rover parts are thin on the ground)
And they only have a ZR160 in. So you take the throttle body without knowing it is any bigger or better...
Just showing you that yes you should, but in reality, not a big set of chrome wheels or huge exhaust now is it...