Because your motor is spinning faster at higher speeds causing higher rpm's
check egr valve
Probably a matter of where the engine's power band is set out, or you may simply be bogging the engine down at lower speeds. Try downshifting and keeping your RPMs up a little.
lower rpms use less gas higher rpms have more power
That depends on what your rear end gear ratios are. It varies greatly. As a default, you typically upshift at 1500 RPMs and downshift at 1000 RPMs.
You most certainly do, it is called overdrive. You may be able to achieve high speeds in 4th gear, BUT you can also acheive those speeds in 5th gear but with lower RPMs, thus resulting in an increase in fuel economy
Fast speeds on a hard drive are important if the drive is going to used for gaming. The average speed of a hard is around 7500 rpms. If it is being used for gaming, a faster hard drive with speeds of upto 10000 rpms should be used.
major vacuum leak?
2-3 rpms
no
Games at High Speeds was created in 2003.
Yes, it is possible to have low RPM (revolutions per minute) at high speed, especially in vehicles with high gear ratios. For example, in a car traveling at highway speeds in a high gear, the engine runs at lower RPMs while maintaining speed. This is often done to improve fuel efficiency and reduce engine wear. Similarly, some electric motors can achieve high speeds with low RPM due to their design and the nature of their operation.
did they want freedom