Well I'm changing insurer anyway, my renewal is 1st June, so I was phoning around to see who would cover me and give a good price with me driving an ST with mods. I'm going to be going with Sky insurance as they are by far the cheapest and give like for like cover on mods.

Admiral do cover engine 'chips' which are arguably the same thing, but I'm not sure what would happen if you were to make a claim etc (if this would be even checked)?

I like to play it safe.