My 2011 roadster made 120 hp at the wheel prior to last month. I wanted more. So I bought Jardines, triple kn filters, and a TUNEBOY kit. I capitalize Tuneboy because those of you who have looked into Tuneboy know that there are very few people in the country who know how to use it. Now I have 154 rwhp, no restriction on the first 3 gears and top limit of 135 mph. What a difference!