Hi, My Audi 80 Type 81 has unfortunately only n u-kat, and accordingly costs 405€ tax in the year. I found a g-kat retrofit kit for 240€, but now I wonder how all this affects consumption/performance. In my search I found only a few leuts that have expanded an existing g-kat, and thus gained more power with less consumption (allegedly). Does this mean in reverse that my motor – which is not for operation with g-kat was constructed – thus swallowing more at the end, and doing less? he needs a relatively large amount with 8-9 liters anyway. Greetings