I have a 1995 540i and I would like to increase the HP from the stock 282 to 300 or better. Earlier on the Forum it was suggested I should begin by improving my MAF. However, they didn't tell me how. What is involved? Do I replace it? And if I do, does that mean it's just the first step of many expensive steps to increase my performance? As you can tell I am new to BMW and don't have a clue about what I'm doing. HELP!