Hi all. Just wanted to introduce myself. I'm a long time lurker, but figured I should join and start contributing. I recently acquired a 2004 Prius, so I'm working from a good baseline, but I know there are improvements to be made.
Welcome to the site. Ya gotta love the Prius. I know I do. Feel free to check out my build thread. While there are things to do, there isn't a ton to get huge gains without spending some money. I'd definitely start with a grill block and block heater though.