It seems many are having cold start problems with a full system. I guess I'm the outlier as I've never had a problem starting my bike up. Just went out to the garage to start mine up after it has been sitting for 3 days. Started right up with a single quick press on the start button.I have a full Akra titanium exhaust, without the tune cold start is shitty. With the tune it starts immediately and purrs like a kitten.