Don't know if you want it, but here is a crucial hint to beat the game or at least get far in.
There is a game mechanic you have to master or at least be good enough to have any chance of getting past the second track and it's the wheelie. Time it right just before a jump and you won't loose any speed thus being able to complete the race with time left on your timer which will be good to have on the next stage.
Thanks for the hint but I kinda caught on to that as it's part of the original arcade game too, only in that version you get crazy amounts of air and then have to be precise about steering your landing or you'll land off track or even worse explode into a tree or roadside sign. That's also why I said it was like excitebike because you have to time the wheelies for the jumps to get as much air as possible. My timing on the original is not bad but sucks on the SMS port. I always wheelie when I hit a ramp but seem to slow down anyway. It seems the timing has to be super precise in this port. Thanks for the tip though. I appreciate it.