I live in So. Il. I was wondering if anybody knew of someone nearby that could tune my ECU I have a 496 ho thanx for any info

Why would it need tuned????

You are going to have to ship it off. I would contact Dustin at Whipple.

Zeke David at complete marine in st. Charles just did mine when I went from 502's to 540's

He can do MEFI's, but I don't think he can do the PCM's on 496HO's. Only a handful of people in the country can do them.

Tunertech on the OSO board?

thanks for the replies I will look into them I am trying too get some more ponies the everlasting battle lol I am up in the air on whether too build a big motor or beef this one up and super charge it.The motor only has 160 hours on it hate too tear it down and start throwing stuff away

ahhhhh. I just figured you put an o2 sensor in and mapped accordingly. You are the human merc manual so I am sure you are correct then. Hell, I call you when I have a question)))

See post #18.

http://www.offshoreonly.com/forums/g...headers-2.html

Nope