I've only had this on a week, but I'm already pleased I fitted it. Takes minutes to install and gives you a nice throttle response (along with a decent growl) when you open the throttle. When driving "normally", you wouldn't know it was there, so it's the perfect stealth mod. Haven't had it long enough to comment on long-term fuel economy, but I took it on an 80km trip I often take, and the fuel use was exactly the same as normal. So, you won't suffer for the extra power - depending on how often you try to listen to the satisfying growl!
