Originally Posted by nickerbocker
I seriously spent so much time on this level to realize it's pretty simple.
Solution: •••Spoiler: The most important thing is to upgrade your car and get item boost. I did it with the 5th level of upgrade, you maybe able to mess around with less, but whatever. Anyway, go to the end of the level, get the spring and right where the spring is there is what looks like a drainpipe (or something) spring into the tunnel, drive up, and you've got it. This is the same ramp you drive down to get the spring.
Hope that helps.
I thought that was it! But I couldn't get into the pipe and figured I was wrong. I'll have to try again. Thanks a lot!