I spoke with my mechanic; we talked about performance figures on the new Elise. His remark was the increased HP would benefit the Elise in 0-60 and 1/4-mile times and increase its performance especially on a smaller tighter track. However, marginal performance figures on an open road. When we discussed top speed he informed me the numbers would vary based on conditions expect between 125-140 being ideal. (The roof could also affect the top speed as well on or off). Any one wanna share their own experience with this.