How would turbo engine on honda civic will affect the insurance?

How would turbo engine on honda civic will affect the insurance? - 1

If you don't tell them? They will continue to take your money, but deny any claim you make because of "undisclosed modifications"

If you do tell them, they will either cancel your policy, or put the price up, because it's a modified vehicle.

Ask an insurer. A factory fitted turbo would be acceptable to insurers as the rest of that car would be suitably upgraded. An aftermarket turbo civic may not even get a quotation unless the rest of the car was improved to cope with the additional power.

Not at all if you don't tell them.