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Thread: looking 4 info. on omc mad efi
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04-25-2015, 12:50 PM #16
ok,let me see if I can get this straight,u guys are talking about manifold air pressure sensor,mass air flow sensor,and mapping the ecm,map and maf sensor q's in with 1 journal(meaning 1 cylinder,being that's the way these block';s are designed)that does not compensate for the other 5 cylinders,so that being said,mapping the ecm for whatever fuel curve the block is ported for is the only way to hit fuel curve on the head,plus the fuel knob that control's more or less fuel variences to different situation that would be more than enough if ecm is mapped correctly from the start,i like the mad efi setup.
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04-25-2015, 12:57 PM #17Screaming And Flying!
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There are no MAF sensors used on marine engines ( deemed too dangerous), nice tool on the dyno though and other than egt you cant put anything in the exhaust of a 2 stroke.
Hence after you have visited the dyno room your system will need to reply on MAP and temps to work on your boat, so make sure they are included on any system you choose.Last edited by powerabout; 04-25-2015 at 01:05 PM.
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04-25-2015, 01:37 PM #18
I've been through this before somewhat,the easiest n beast way to monitor it is head-temp guage on each cylinder that can b done for about 150.00-200.00 dollars,n a custom pod mounted on dash.
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04-25-2015, 03:22 PM #19Markus' Performance Boating Links:
www.toastedmarshmallow.com/performance
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04-25-2015, 03:25 PM #20Markus' Performance Boating Links:
www.toastedmarshmallow.com/performance
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04-25-2015, 03:29 PM #21Screaming And Flying!
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[QUOTE749430]Yamaha has used O2 sensors on 2-stroke outboards.[/QUOTE]
Wasnt it on one model for one year and lots of trouble?
I admire the attempt though.Last edited by powerabout; 04-25-2015 at 03:33 PM.
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04-25-2015, 04:33 PM #22
Just dont understand how mass air flow for 1 journal is consistent for the other 5.
Last edited by bigbore; 06-15-2015 at 12:46 AM.
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04-25-2015, 04:38 PM #23Screaming And Flying!
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04-25-2015, 05:04 PM #24
Hang on i'll look at brucato's intake,this is what i'm used to.Attachment 318666
Last edited by bigbore; 04-25-2015 at 10:45 PM.
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04-25-2015, 05:52 PM #25Screaming And Flying!
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04-25-2015, 06:05 PM #26
My mad's got a ambient air sensor on the intake manifold.
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04-25-2015, 07:08 PM #27Screaming And Flying!
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04-25-2015, 08:22 PM #28Scream And Fly VIP
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Yamaha had the o2 on the intake
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04-25-2015, 10:52 PM #29
Sure am happy to see everybody out the wood-work,thanks 4 replying guys.
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04-25-2015, 10:54 PM #30
bigore'll dust his boat
As soon as he's off probation.