496 Mag HO
#22
AKA NoMoBoatin
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Re: 496 Mag HO
Had the same with my 496 on the baja.merc rep said not to use 93 and when i put 87 in it i had less soot on the back.see if your local merc rep can reflash the computer and it will reduce the soot problem a little.at idle i would put on capt.choice so it would go out the prop instead of on the back of the transom.
#23
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Re: 496 Mag HO
I've checked locally about having my PCM reprogrammed, everyone tells me Dustin at whipple is the only one that can do it yet. Just curious if it helps or is it a waste of time and money!!!
#24
Re: 496 Mag HO
Originally Posted by mwdill
what octane are you using?
since i started running nothing but 87 i don't have that problem anymore.
since i started running nothing but 87 i don't have that problem anymore.
#29
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Re: 496 Mag HO
Well I pulled mine off tonight. I am going to get them polished and then I'll let you know if there is any change. I will say I will be shocked if there is a difference. What is the story on the two and a half inch horn on the end of the riser? I have never held a riser from any engine in my hand before so that may be a dumb question but I just thought it too looked like a bottleneck. My thought would be none of these things would make a hell of a lot of difference unless you start trying to make some more horsepower.
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Re: 496 Mag HO
Originally Posted by boatfreak28
Well I pulled mine off tonight. I am going to get them polished and then I'll let you know if there is any change. I will say I will be shocked if there is a difference. What is the story on the two and a half inch horn on the end of the riser? I have never held a riser from any engine in my hand before so that may be a dumb question but I just thought it too looked like a bottleneck. My thought would be none of these things would make a hell of a lot of difference unless you start trying to make some more horsepower.