Got it. Thanks for the advice!If you are boating in salt water or your boat sits in the water a lot DON'T REMOVE THE TURBULATORS! ,the stock steel valve and seats will rust! If you removed turbulators on stock 496's and lost power or speed, something else is wrong. Suggestion- get a fuel pressure guage and read your fuel pressure at speed with the vacume line disconnected at the fuel pressure regulator, if the fuel pressure drops below 40-41 psi under full throttle you have got a fuel delivery issue and that will turn of power quickly and you will loose speed. We have found at Raylar that most guys now with the newer 496's with the newer CoolFuel Merc assemblies forget to service the filters and water disc in the CoolFuel housing and the result can be catistrophic!! Also some boat builders and riggers were installing small size restrictive anti-siphon valves on the fuel tanks and small diameter 3/8" hoose fitting and sometimes crazy fuel line routings and really creating power loss problems for 496's. You turbulators in and out are not your problem, look else where!
Ray @ Raylar