4 Doorz, the post just set off alarm bells, so injecting a word of caution. Every last pony insights visions of max hp on a dyno - to me anyways. I had someone do a 'get every pony possible' tune, and it wasnt long before I took it somewhere else and got a retune.
I completely agree with you, WRT a good tune. My car doesnt get track tuned, but it does get a good workout on the street. And yes it does cost extra, but well worth it IMHO.
Check engine light - some people dont keep an eye on their check engine light, and usually pay the price.