Guys just noticed that Hamman and supersprint (produce system for hamman) have released the sport exhaust system for the X5m as they had previously only for the x6m..
apparently it adds 60 bhp to the 555= 615 bhp...and add the hamman engine remaping you get a total of 670 bhp...if anyone has gotten hamman or supersprint yet, i wud really like to hear the noise with the katalyst replacement pipes and all
