MP3 ECU Questions. Help!!

[TimTom55]

(I have yellow 2001 Mazda protege MP3, #1,355. I am currently upgrading my car performance wise, and I am curious about its ECU. Apparently a lot of people want the MP3 ECU but it only gives about 10hp in extra power. I have scoured the internet trying to find out more about it and there is a huge debate on whether or not it actually gives 10hp, or if its other things about the MP3 that helps give it the extra ponies. Can someone help me understand all of this? Should I keep the MP3 ECU or should I go buy a different performance chip that will give me better results? Oh wait, is the ECU the same thing as a performance chip or is the chip just an add one to the ECU? If you guys could answer any of my questions I would be grateful!(scratch)