i agree with you all, i just bought this boat from miami and i live in Malta Europe!!
the mechanic here told me that it has volvo penta headers on it and these are differnet from the merc they are restricted when compared.

that is why i am not changing the prop for now. i will do the headers and K&N filter (maybe a good cam)

also i have the fuel regulator disconected and the pipe that goes in it is blocked . any one know why they block this ?

i agree with you all, i just bought this boat from miami and i live in Malta Europe!!
the mechanic here told me that it has volvo penta headers on it and these are differnet from the merc they are restricted when compared.

that is why i am not changing the prop for now. i will do the headers and K&N filter (maybe a good cam)

also i have the fuel regulator disconected and the pipe that goes in it is blocked . any one know why they block this ?

Bingo, they are the best, but not cheap. I have (2) new sets that I saving for my monster motors build......

K&E's do make POWER!
http://www.diamondperformanceparts.com/home.php?cat=282

And sound absolutely amazing!!!!

Diamond P is making them now, not KE.

Don't waste your money anywhere else...this is it, hands down.

Don't think my neighbors on the canal would agree about the amazing sound part :), They are a bit loader than most headers also, but that is part of how they make so much power! I put Shotgun mufflers on my last set and didn't lose any speed....

If they used 454/502 Volvo exhaust manifolds I can't see them being too restrictive.

Now, the unhooked regulator on the other hand could be causing the engine to run too rich. In turn losing power and rpms. Hopefully someone that knows more will chime in.