hello, carry me with the thought to increase my v6 turbo to 275 ps. who of you already owns such a deer. who has driven that already. is the hish better from the sound than the normal v6 if you make the step 1 or I need a exhaust system to do so. how is the v6 increased to the deer? does this only run via a software update? so without hardware changes like bigger coolers and so. can my local saab dealer or must the vehicle after st. galle n? do you have to report the increase in the performance of the insurance? hope you have some good infos. thank you