Re: Captains Call Exhaust
My 22' Crownline bowrider with a 496HO, 425HP, has Captain's Call exhaust. There is absolutely NO performance difference in speed (GPS) or fuel mileage (Smartcraft gauges) switching it between thru-prop and thru-hull. The roar from the thru-hulls does sound cool for a couple of minutes until it gets old, and they're GREAT for cranking the boat next to the dock and scaring little kids!
They're neat if you like the sound of an unmuffled V8, but from what I understand from the OSO (Off-Shore Only) bunch, performance-wise you'll have to be pushing around 500 HP before you see any difference.