dmdicks said:
This isn't 100% correct. A supercharger's rotors are always spinning ready to make boost. As soon as you step on the gas the super's bypass valve closes and boost is created. Since the rotors were already spinning any "lag" you may feel is just the time it takes the bypass valve to close. I make 5psi at 1500 RPM with my setup and its just the S/C making that boost because at 1500 RPM there isn't enough exhaust energy to spool the BAT (Big Arse Turbo) fast enough for boost.
It all comes down to the fundemental differences between turbochargers and superchargers. I will be building a whole section on Alpine's website soon that will cover all these differences and what to expect out of each setup.
Depends what car your driving....
I have a Stage 1 PCM, flat shift into 2nd, It STAYS at 15-16psi. Flat shift into 3rd or 4th and I get 16-17psi.
Even if I shift after the boost drops due the PCM's control over the wastegate, I still goes back to max boost allowed by the PCM.
I say release an intercooler supercharger system with excellent off-idle power and very good top end power that compares with small turbo system and alot of this "talk" would be pointless.