Negative Pressure Supercharging! i guess we have it all wrong acording to them...

[Z34Phoenix]

http://www.impulsengine.com/how/what_is_nps.shtml



they claim to turn a 4cycle engine into a 6!

[Slick2500]

Hmm interesting. If this thing actually works and has been working for the past 5 years like they say why has no one heard of it? Why do they not have any videos showing this system in action? Why no dyno sheets? I smell some pretty thick BS. They claim their kit costs less than a standard supercharger or turbo kit yet its priced at $8,000, and they say their crate engine is 1/2 the price of a normal supercharged crate engine there crate engines cost $14,000. Um ok I am pretty sure I could supercharge or turbo charge any other engine for less than $8,000 and I am sure you could order a supercharged crate engine for less than $14,000.

[TLSheff]

"Vacuum Supercharging or "heaps more suction" may be easier to understand by the average laymen, but technically the process is Negative Pressure Supercharging. This is because the pressure in the cylinder must be reduced FIRST in order to create a vacuum or suction. Therefore, the more the pressure is reduced in the cylinder, the higher the vacuum or suction, the more air is pulled into the cylinder."

So the vacuum in the cylinder after detonation isn't enough, we need MORE vacuum, so were going to play with the cam shaft, valve train, and MAKE it suck in more air... and this is negative supercharging....

[SlowNA06]

Definite Snake Oil. Such things do not simply elude well-paid engineers with vast resources.