*Need some people to test if my ramps are fun enough or need expansion. Do not use 'Bikes can drive on walls' for these. Also use overclock to 333mhz, but you don't have to just make it more smoother.*
Well I got a bit bored and decided to make my own insane stunt thingys. The first ramp thingy is like a semi-loop which makes you turn upside-down, you have to get in-between a gap then turn the right way again then jump off the ramp. Pretty easy really, I recommend that rocket boost is set to 3 because it seems perfect to me, 2 if you're really good at these kind of stunts.
The other ramp going straight up, is to see how much speed you can get and how high you can go. No rocket boost for this but if you're EXTREMELY bad at GTA then use it at 1. When you come down you can try do 360 degree turns or switches down the other ramp. Even try to balance on the top of the ramp but that's for more advanced people.
Here are some videos of me going up both ramps.
www.freewebs.com/kool-hax/video1.gif (videos seem faster than the real game...)
www.freewebs.com/kool-hax/video2.gif (might not upload, if this message disappears next time you look at this thread, then I uploaded)
Tested on my own 2.6 EU (AUS) PSP.
The link to the cheats.txt is
here.