Ooo Matron !
Do they online. I've just tried a dummy quote. If I put chip/ECU of 11% to 25% they quote a price. If I put 25%+ then they won't quote.Unfortunately Admiral seem to be a bit inconsistent with their approval for mods on Nissan GT-Rs. I've been with them for years on a multi-car policy (3 cars) and they wouldn't insure me on a GT-R because it had been tuned and therefore they claimed they do not insure cars which have been "chipped"/with modified ECUs. Shame though, because they've always been competitive for me
When I declared the mods to them they said on the phone upto 25% was fine. So that seems to match with their online system.
Oddly, my dummy quote was £902 (like for like with my actual renewal). Without the mods it was £852.