2NZ Pick me up advice

[SquishyShoes]

Hey all, I bought a little hatchback 1.3L yaris early last year (2009 model) and have found myself wanting a little more get up and go. I'm not worried about any top speeds but just want a bit more response from the throttle. Not really looking to go the forced induction route as I live in the middle of nowhere and trying to get it tuned would be an absolute nightmare. Open to any and all suggestions (including turbo if you have ideas/advice on the ecu etc). I also recently purchased some BMW bottlecap wheels (14x6) to go on it mostly for looks, but they are also a lb or something lighter I think than my stock steelies. Any recommendations on tyre profile for those as well? Thinking a 195/60/14?

Thanks all,
S