flat rate

iTrader: (3)

How does the mercury 600 hold up with the stage 4 kit added. Is it a decent package or something to stay away from?

Kelly O

Great package as long as engine healthy when upgrades added. Big midrange torque. For greatest longevity, prop up to keep rpms near stock ranges.

TeamSaris

how would you know?

ALL_IN!

iTrader: (1)

Buddy of mine had stage 4 installed when he had engines rebuilt. Once all the bugs were worked out, it runs strong. He put Hering cleavers on it, and it was a really fast boat. I think the bugs were not whipple related, as I don't think the ECU's had to be sent back.

fastenuff2

I did the stage 3 at 80 hours.at 200hr I pulled heads and had edddie young rework heads and springs and did stage 4 upgrade.it makes a huge difference and sounds like a real motor instead of a house boat motor lol