Enable the "All emeralds", "Level select", and "Debug mode" codes. Go to Oil Ocean (either act). Become Super Sonic, then stand on one of the green/yellow colored cylinders. Jump on it, but as soon as you hear it break, go into debug mode. You should be thrust upward, even in your debug state. Then as soon as you regain traction, exit debug mode. You should now be able to jump twice as high and fast.