I like Procharger, run over 11lbs boost, over 1100 hp on pump gas.
Ran Procharger in my Baja for over 4 years no problem, Now running a pair of Prochargered 572's in my Awesomecat.

Smitty (Articfriends) also is a big Procharger fan... He's EFI, I'm carb.

enclosed a pic of my setup ... I'm a CNC shop so I built my own brackets and intercooler. btw Procharger brackets are wimpy...

lets not forget how noisy the procharger is.........

Like I can hear anything over my Stellings....

What are the advantages and disadvantages to both, assuming they are set up correctly?

IMHO..They both work great if set up correctly(efi applicatons). The Whipple has better packaging and has more eye appeal. It also has more low end torque, but a Procharger has plenty since most boats will spool up to over 3000 RPM just geting on plane. The M3 & 4 PCs seem to make a little more top end power than the 2.3 and 3.3 Whipples, but the 4 & 5 liters are a whole different game. Whipple intercoolers are much better also. Again the Whipple package is complete and tuned correctly in most cases right out of the box. Prochargers need a lot of setup work by a knowledgeable tuner.

Bob
Full Throttle Marine

My only experience with both is on the drag strip so :
The power curves are very different as well, Prochargers as all centrifugals are linear so you dont get as much boost until you get some rpm, Whipples are strong thruout but in my experience with drag cars they dont have the same top end charge.
I see 1000+ hp cars with centis or turbos but few with whipples.
At that power level Whipples are very hard to control the power and actually put it to the ground not to mention the bigger ones are huge by the time you factor in blower+intercooler. A good centi is also more efficient than a whipple.
Setup is always harder with a centrifugal but they are a lot more forgiving on drivetrain.
Whipples are brutal on the drivetrain unless you have a trained and gentle throttle technique
Again this is car experience and not boat so take it for whatever its worth.

With hyperpathetic pistons I would run NO power adder at all..

What are the lines going to your intake?

I would find out how much horsepower you use up just to turn the ProCharger versus the Whipple.

Those are the intercooler lines going to the transom pickup on one side, on the other the dump out the back. I used to run seapump to the intercooler but it ran way to cool channel idling.

Whipple!