Don't want sound like a Maiden Aunt, here - but if you chip any car and fail to inform your insurers your cover will be invalid.
If you do inform them, your premium will probably ascend into the stratosphere.
I was talking to a loss assessor, and apparently one of the first things they do these days is plug their laptop into the diagnostic socket and see if the ECU parameters have been altered. If they have, then there's trouble at t' mill...
The plug in kits would probably be undetectable - *if* you were able to remove it before the assessor got his hands on the car.
So, if you have a bump and are injured - insist that the ambulance crew allow you to ferret under the bonnet before whisking you off to hospital...
Edited by: Captivabits