[5yearplan]

Ah, I think I understand you now. It's too bad you couldn't use an STS style turbo setup where the turbo is at the rear of the car, as it would probably give you the room to intercool both stages. I would look into water injecting the supercharger stage to keep temps down. I am interested in how you will be able to smooth the transition from turbo to charger... Also, are you planning to use an atmospheric vent blow-off valve, or route internally. The second option would give you better response. In my old supercharged car, I could tell when the charger had reached the end of it's efficiency. I could feel the Hp curve drop off a bit above 5500 rpm as the boost maxed out at 14psi. It would have been nice to have had a turbo that would "spool" at around 4000 rpm to develop another 5 psi at 5500 rpm, extending the Hp curve into the redline. It was most noticeable in 5th gear, when I maxed the car out at 145 mph, because the last 15 mph I could tell the supercharger could only barely keep up. I will note however that I had no business going that fast anyway, but I was curious as to what the car could do. Back on topic, I understand that your build is quite different in that you have 2L approx. of displacement where this car had 3.6, a lower redline and weighed quite a bit [and you have much less room under the hood]; so a bit of an apples to oranges comparison. How much does the alfetta weigh anyway? Also, where did you source the Toyota supercharger from, I am looking for a charger for an 2.2 liter. A very cool project indeed.