stuff like engine chipping puts loads of extra stress on whole engine/drivetrain/clutch setup that original car was not designed for. There are really no free l

stuff like engine chipping puts loads of extra stress on whole engine/drivetrain/clutch setup that original car was not designed for. There are really no free lunches out there. Even aesthetical changes are a big warning - this one has been somehow tampered with, and you have no clue what was changed and for what reason. For example I bought some older BMW few years back. When i went for some complete checkup after cca 2 years, mechanic told me that car has been lowered a bit and brakes are some lightweight version. It was my first car and I didn't notice, and effin' dealer didn't mention it. All good but - lowered car has issue in places like underground parkings, where road is steep and sometimes I hit the bottom of the car when road bends too much. So because some idiot previous owner wanting to squeeze a bit extra driveability out of a diesel car (although amazing diesel it is), I now have these crappy consequences and have to drive carefully like with some ferrari. I've hit the bottom in various situations maybe 20x so far, maybe one day it will break something crucial and I will be left in some nasty situation with broken car. Yeah, you want untampered (more) predictable stock cars.