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 Pro drive 40efi exhaust problem 
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MMT Pro Member

Joined: Sat Oct 26, 2013 1:00 pm
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Location: Wisconsin
Post Pro drive 40efi exhaust problem
So we were running up river today and next thing I know boat goes from stock to loudest exhaust I have ever heard. Come to find out stock exhaust tip fell off the muffler! Anyone have this happen


Fri Nov 23, 2018 3:03 pm
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MMT 1000 Club
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Joined: Fri Jan 16, 2009 3:18 pm
Posts: 1726
Post Re: Pro drive 40efi exhaust problem
wow! so u went from a stock exhaust to a voodoo exhaust!!!! and you saved $600!!!!!!!!!!!!!!!!!!!!!!! LUCKY!!!!!!!!!!!!!!

seriously, mufflers warranteed for a year I think. just call and get a new one. sheet happens.


Sun Nov 25, 2018 10:53 am
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Joined: Fri Jan 10, 2014 1:16 pm
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Location: Gladewater TX
Post Re: Pro drive 40efi exhaust problem
Yes I've had one in shop, low hrs , blown out on a pd 40


Sun Nov 25, 2018 1:10 pm
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Joined: Fri Sep 29, 2017 5:22 pm
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Post Re: Pro drive 40efi exhaust problem
Guess i'll keep an eye out for it. Mine has been notably louder than the old 36 since day one, but that's expected since it's a bigger power head. I'll buy a quieter muffler just as soon as that becomes a reality.

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Sun Nov 25, 2018 6:07 pm
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Post Re: Pro drive 40efi exhaust problem
I've blown out two in a row. Finally welded my own outlets in it.

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Mon Nov 26, 2018 1:30 pm
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Joined: Thu Jan 15, 2009 6:35 pm
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Location: South LA
Post Re: Pro drive 40efi exhaust problem
Is the 40 really a bigger powerhead? I thought it was just efi and better heads that made it 4hp higher.


Mon Nov 26, 2018 4:07 pm
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Joined: Mon Feb 06, 2012 6:13 pm
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Post Re: Pro drive 40efi exhaust problem


Mon Nov 26, 2018 7:21 pm
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Post Re: Pro drive 40efi exhaust problem
Not a bigger block from what I understand.

And those stock exhaust are a good bit louder than the 35's & 37's.

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Mon Nov 26, 2018 7:51 pm
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Post Re: Pro drive 40efi exhaust problem
https://m.youtube.com/watch?v=ixCOVgnOufg

This gives you the info on the 40


Mon Nov 26, 2018 8:51 pm
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Post Re: Pro drive 40efi exhaust problem
So...37 HP with thicker wall block, cam, piston/stroke, exhaust and tune.


Tue Nov 27, 2018 12:55 pm
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