[Gmecm] Re: +AFs-Gmecm+AF0- RE: SB Chevy in boat

[Chris Reynolds]

I did a MAF TPI in place of a Q-Jet on 305 in a boat a while back then ended up selling it to a friend.  All I did was raise the temp required for closed loop in the prom to well above what it was stock.   I also had to slow the engines idle down for smooth gear changes.   

David Allen <davida1 at hiwaay.net> wrote:  My retrofitted 4.3 TBI motor in a boat runs only open loop. It still uses half the gas of the carb setup on the same motor. Look at the link below for details if you are interested. 
http://home.hiwaay.net/~davida1/boat.htm
David


----- Original Message ----- 
From: "Andrew Gibson" 
To: 
Sent: Thursday, August 17, 2006 3:00 PM
Subject: [Gmecm] RE: SB Chevy in boat


>I worked with a former boat mechanic a few years ago who told me that mercuiser was using the vortec 350 in the boats for more power and fuel economy. They didn't use an o2 sensor because with the water cooling of the boat exh manifolds it can't stay hot enough. So the motor is just run in open loop. You may want to check that out.
> 
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