I have had guys do a ProCharger kit in like 5 hours rocking through it.
But I would say 6-8 taking your time is more average.
(which is inline with the person on here that posted saying 5:30)
We made it as easy as pie to install. That way you can spend the rest of your $$$$ you saved (and time) installing a meth system, or other goodies like exhaust or cam etc.