the roots blowers give instant response.
they are easier to tune because they are rpm controled .
and the computers can adjust for the boost as it is a constant.based on throttle position and rpm so much rpm so much boost . so much fuel ect.
with a centrifical you can adjust it via pulleys for lower rpms but not as low as a roots, + a roots does not leak pressure back like a centrifical does .
when a centrifical is at low rpms the boost leaks back out it has no way to seal the boost in .thus the backflow
a centrifical blower compresses air after the blower in a straighted chamber where velocitys turn to boost . in a roots the air is moved towards the front of case and out where compression takes place in the manifold and air is not able to go back out where it came from.
a turbo makes boost via high rpm of its rotor"vanes" it works much the same as a centrifical other than its exh driven.
a turbo will make more hp and tax less than a roots or centrifical.
the centrifical will take less hp to run than a roots .
but a roots is the best all around setup for a heavy street car right now as computer programs and tech goes on the turbos will be the best but for now its just to hard to program all the variables in for a turbo setup on a street car that see's hills and different elivations all in a matter of hrs .
but this will change soon .
as it is a well tuned roots is the best for the dual porpose sc owner.
I think a m112 can hold its own pretty darn good with a AR up to a point a point we have not reached yet the little m90 is about out of breath .
maybe a few more mods can be done to it but its maxed out pretty much .
the AR and the m112 will take us well into the next stages of sc racing. and a turbo will be great for a race only sc but as i said it is not best suited for the street driven sc "yet!!'"
