m157 precautions.
would jumping to a m157 car and keeping the same maintaince mind set keep me problem free? my tuner has owned a 157 e63 knows the issues it has. i probably wouldn't buy one with more then say 75k miles one it. tune it asap.
i dont drag ran etc. its a daily that i just have fun with.
just trying to gauge if it would be a good or terrible idea. i read through some of the threads of people having major issues. i still cant tell if its tune related, plug related or what. my understanding is factory mapping is too lean buy the time one of us buys one and tunes it its too late and time is ticking, so buying a 20k or 40k mile'd 157 car isn't in the budget.


