I am installing a powerdyne supercharger on my tpi.

Will I still lose power over 4800 rpm the way it does without the blower or will the blower get rid of that negative tuned port effect?

Does anyone have a dyno curve of a tuned port running about 6 pounds of boost?

 

Centrifugal superchargers are very efficient on the top end. The TPI is very efficient in the mid-range. Combine the two and you've got a very good setup -- one that will rev beyond 4,800 rpm. I take mine to 6,500.