darkmach1

Around 8psi on the 85mm, close to 10psi on the 80mm for phase 2. No warranty on phase 2.

justyntym

I went with the roush stage 1. What is the optimal octane for power with the supercharger? No one at the dealership told me any octane requirement. Been running 93.

ZXMustang

The Whipple would be the more effecient blower.

Its Twin Screw>TVS>Roots. Twin screw blowers like the Whipple and KB, usually make more power at the same boost levels as the TVS and roots style. The TVS is like a hybrid version between the TS and roots.

If you have the option to get the Whipple, that would be choice one for me. The Roush would be second and something like a magnacharger would be last.

Thats if you want ground pounding tq from the stab. If not and you like to get your power at peak levels, I would do a paxton 2200 or a Procharger D1sc.

JimC

Typically a supercharger will be tuned for 93 octane.