granted and thanks for the input but i just want to be sure before i spend $2500 on new exhaust system to then find out its a cracked head or inlet and have to buy one of those also then have 5x manifolds + risers if i new for sure i would buy one tommorrow

was going to buy a performance exhaust when i thought the manifold or riser was leaking but would have had to wait and only had 2 weeks left before the boat came home, today. so got stock one next day but sadly didn`t make any difference

going to go down the cheapest route of testing everything first got 6 months to sort it now till next season i know boating costs but if the missus knew just how much :angry-smiley-038:

cheers for all your comments

:ernaehrung004: managed to borrow some imco exhausts with dry joint solved the problem so have bought some

cheers for all your posts