Mewtwo Strikes Back
While it works, some setmaptiles aren't removed and, most important, no music is being played at all.
to hackmew: editing the tiles wouldn't do much because its four tiles that are only used in that map. In the script we are editing, we don't even know what it does since it has only the cmda6 command. You don't have to use this map either. You could create a new one and use it as the starting point with your SMCA and warp to the truck, if you so desire. But I'm under the impression that if people want to have the truck effects off also means they don't want the truck either.
Also, you probably used the transparent color instead of black. For info on that, look at the Tutorial video I made in the original post.
No, I didn't use any trasparent color or workarounds like that ( e.g. changing any script or tiles or whatever). I simply hacked the truck routine and removed anything that was causing the shaking, sounds and the rest. Anyway, replacing that cmdA6 with a warpmuted command isn't a really good idea because warpmuted needs more bytes so you will end up overwriting data unless you repoint the whole script. Needless to say, overwriting data isn't good and can easily cause side effects.