I'm looking at buying an M3 with an ESS Tuning 535hp kit installed already. I only know the basics about cars and have been doing a lot of research on ESS Tuning. Car only has 32k miles on it.
Honest opinion and advice, do I need to be a car expert to own an M3 with a supercharger? I know it voids BMW's warranty so how is everyone else's M3 reliability wise with an ESS tuning kit installed?
When something needs work does everyone work on it themselves, or take it to a third party?
Pic below of the car's engine.
