I had the same result, even upgraded to a downpipe and went to map 2, it felt a little quicker, maybe 20hp worth, but nowhere near the 60-80 I was hoping for. Sold the car and have a 335is on order, I guess they are right about the tunability of an n54 vs an N55. However, it is a good product and a great price, just didn't give me the power I was expecting.
|