At 5500rpm at full 7psi boost, a stock Piazza injector is on 65% duty cycle. (its proper 4-channel sequential injection too, none of this 2-channel parallel injectors bollocks)
The stock Piazza Turbo engine, with its forged crank and rods, is good for 12psi. Add forged pistons and you can run 15psi as long as you use good petrol, although the electronic wastegate controller will reduce the boost if knocking is detected. 12psi yields a good 260hp, which is PLENTY for a short wheelbase RWD with all the weight in the front...
A/R= ratio of exhaust inlet area to radius from centre of turbine. Defines how much torque the turbine will see from any particular gas speed. With a bigger compressor side, the lag will increase a bit, but Piazzas never had lag anyway.
no subject
The stock Piazza Turbo engine, with its forged crank and rods, is good for 12psi. Add forged pistons and you can run 15psi as long as you use good petrol, although the electronic wastegate controller will reduce the boost if knocking is detected. 12psi yields a good 260hp, which is PLENTY for a short wheelbase RWD with all the weight in the front...
A/R= ratio of exhaust inlet area to radius from centre of turbine. Defines how much torque the turbine will see from any particular gas speed. With a bigger compressor side, the lag will increase a bit, but Piazzas never had lag anyway.