Increased insurance contribution due to chip tuning

After my change of vehicle from D5 to 2,4d with Heico Chip 190PS, my insurance now “finally” sends me the billing with calculation of the insurance contributions. Result: Compared to the previous year significantly increased contributions! I then recalculated with my data and notice that the insurance has increased the contribution by almost 40% in the vehicle insurance – without stating reasons. A phone call has gone ahead, by wanting to have accurate documents about vehicle new value and costs of chipting, which I of course sent without any consideration. Have you experienced similar experience? Who can give me an insurance that allows this registered and approved chip without surcharge? I currently pay despite SF11 full 700,- in the half-year liability and TK/VK, in direct comparison with the HUK, for example, that would be about twice what would be possible according to my key numbers and other data… philipp