Just got SB installed today, took me about 15 min. The hardest part was probably getting the original connectors to separate. It was tight as hell!!!
I started driving and immediately notice a strong surge in acceleration (2,000 RPM ~ 3,500 RPM is most noticeable). I love this thing! the car feels a lot stronger on initial take off and RPM rises REALLY QUICKLY. You need to be really careful about stepping hard on the gas pedal after installing SB, because the car just takes off. However, I now need to re-adjust my driving behavior to the new setup. This was a great purchase.