Originally Posted by e92law

My car hasn't seen a dyno, so it would not be fair for me to give you numbers. There are a ton of dyno's on the e90post, among other sites. It is also important to remember that a tune should improve the way a car performs on the road under your most important driving scenario. For example, I don't want a tune just to get a high dyno number and perform well on the drag strip. The dyno number is important, but I really want something that performs well on the road during spirited driving. Therefore, things like how quickly the boost comes on, how the tq curve looks compared to hp, etc. is very important as well.