Is the PSI roots or screw charger? From what I have been told a screw blower moves the air completely different than a roots. A roots constantly pushes the air to the front of the case and it tends to come out at ruffly a 45 degree angle. Thats why you see a lot of racers moving the blowers back on the manifold. Even the newer blower are moving the rotors future and future back in the cases. The big roots blowers do have a triangle shape bottom. Each manufacture is probably a little different position.Those blowers are for purpose built race cars. Is this a street or race aplication>
Mostly a street car. PSI makes both but I will be using the screw if I use them. There have been a few people that have had luck with fuel injection and the C rotor believe getting it to behave on the street.
