Performance Power Kit
I bought from BMW of Morristown the BMW performance Power Kit part #11122183957. I was able to snag it for 600 and the install cost me an hour of labor.
The results? The exhaust sounds a lil more burly at idle, throttle response is crisper and no turbo lag at all.
Well worth the money especially that I was able to get one from inventory before BMW jacked up the price to 1500
That extra 40HP and 30 ft-lbs of torque can definitely be felt