Me and Weedy installed my UTEC/Remote Map Selector/Launch Control switch tonight for my 04 WRX. I LOVE IT. The flat foot shifting is amazing, power gains are great and no knock at all. We did a quick tune as I don't have my gauges installed yet, waiting on my stupid Defi Pod to get here. But overall, the UTEC is amazing and I can't wait to get the UTEC Tuna and really get deep into tuning this machine. Two thumbs up turbo XS!!!