My Top 5 Best Modifications that I suggest on the BMW E9X M3. I've modified a few of these cars now. This is the list that I would work through if I got an E9x M3 that was stock and started to modify it. There are a ton of things you can do to the E9x M3 and you really can't go wrong. I think this list is the best bang for your buck and a great place to start!

1. Exhaust
2. Engine Tune
3. Underdrive Pulley + Dinan Intake Elbow
4. Wheels Tires
5. Coil Overs + Camber Plates