Hey diego,
So, I was reading through your post including all of your little finds (tweaks) you can add to 3rd gen games. The part about changing the emerald bike speed to FireRed's struck my attention. You see, I'm hacking FireRed, and I'm trying to just completely change the bike to a new overworld sprite, meaning that when you click select on the registered bike, it would change to an overworld. Which is why, I'm trying to change the speed at which the bike goes in FireRed to the average player's speed. I thought you may have some information on this, being that you found where this is all located in FireRed. (At least I'd assume since you knew what to edit into emerald) Do you, by any chance, know at what offset the bike's speed is located in at FireRed?
Thanks Very Much in Advance,
PokéMew