I had the booster for my '83 240D reconditioned bt a company that's been in business doing just that for over 50 yrs..
Upon reinstalling it, it would not 'boost'. In fact after 3 attempts, said company gave up and refunded my money.
I temporarily substituted a used one and still would like to reinstall the reconditioned one.
What's wrong and how do I fix it ?
Thank you, Courtney