I am looking for simple quick HP gains from the 496 MAG. I currently run the 2002 375HP and complained about the leaking soot; Merc. sent a re-programed ECM / PCM to lean the engine. Sounds like a good start; should I supplement with a K&N air filter?? Are there internal plastic / rubber inserts / baffles in the capt.call that could be removed??? ANY HELP FROM YOU 496 MAG OWNERS, WHO HAVE TRIED EVERYTHING, WOULD BE GREATLY APPRECIATED!

Here's a couple of ideas. Not the cheapest ideas though?

http://www.procharger.com/marine/M_496.shtml

http://www.whipplesuperchargers.com/...sp?ProdID=1149

THANKS ccarloss! I have checked them out, not really for the ILLINOIS River. I am just looking to find hidden Hp.

LAB THE PROP?????
K&N Air Filter???
Baffles in the "Y" exhaust???
Larger pitch???

Again -- I am running 496 MAG @ w.o.t. 4850rpm. 22P Mirage. 25'7", 4350# dry. 67 mph under typical conditions; LOOKING TO BREAK THE 70mph MARK.

Lab your props.......

Horsepower costs money. Howfast do you want to go?

Just looking for the extra HIDDEN 3-5 hp I know is there; I only want to break that 70 MARK!! 3-4mph away. ANYONE TRIED THE K&N element????

3 to 5 HP isn't going to get you to 70. The K&N element might get you 1/2 MPH, or then again it might add nothing. But it will look really cool and the cool factor is worth a lot!

Someone said lap the prop - probably the surest approach far 2 - 3 MPH

Cam and ECU change to make it a 425HP Mag. HO...

67? Is that GPS or speedo?25' with a Mag going 67 is pretty stout.You may be further away from 70 than you think.BOB

Caravelle,I just noticed that you have a 26 Caravelle.My buddy has same set-up.On a good day with him & his wife,full tank,maybe 60!