Thinking of installing Eddie Marine exhaust on my 29' Velocity with 496 mag HO. Has anybody ever used this exhaust before and what kind of gains could I expect? Thanks.

I doubt you will see any gains.

+ 1

Look at the Dana Flo-torque manifold header kit and you will see an improvement.

Best Regards,
Ray @ Raylar

Hey there, just read your post. I agree with Raylar, go with the Dana’s. I put them on my 454 mag mpi and immediately noticed a substantial improvement in acceleration and all around performance. The sound quality changed considerably and the boat just roars up on plane now. They look great too.