Interesting bits from: http://www.sccoa.com/forums/showthre...8&page=1&pp=15
"Yes late model teflon coated rotors will help. My MPII gained 1-1/2 pounds of boost at full tilt by installing a set of 94/95 rotors. I was able to slow down the blower 3% without losing any power. I've now got bare aluminum rotors and went back to overdriving it a little more which isn't nearly as efficent"
"The rotor coating process is one that is tightly controlled due to it'*
impact to performance and durability. The prep of the rotors for proper
coating adhesion is a critical part of that process. It is not
recommended that any alternative process be employed as that process has
not been validated. In addition the base aluminum rotor profile is
different between the 1990 MY uncoated rotor and the 1994 MY coated
rotors. Coating of the 1990 MY rotors won't allow the correct operating
clearances to be achieved. I did confirm that the 1990 MY assembly
could be assembled with the coated rotating assembly from the 1994 MY
design as a direct replacement. I would recommend this as your best
option. Contact Magnuson regarding purchase of a 29650 Bearing Plate
Sub-assembly. Be sure to follow their recommendations for oil and
sealant for assembly."