Ford 289 surges and coughs

For discussing B&G MS-I/MS-II set-up and tuning of fuel parameters (including idle valves, etc.).
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david martin
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Re: Ford 289 surges and coughs

Post by david martin »

Thank you for the feed back!

I spent a little time with the VE tables last night and hope to fire up the motor and give it another go today.

I will also be connecting my lm2 wideband very soon.
kjones6039
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Re: Ford 289 surges and coughs

Post by kjones6039 »

Hello David......

Haven't seen you around lately. Have you been able to make any headway with the Ford?

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
david martin
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Re: Ford 289 surges and coughs

Post by david martin »

Ken,

For the past 2 weeks my attention has been drawn to my other project.I have a lexus is300 that I'm installing turbos. Saturday morning I was able to wire the analog output from my LM2 to the ms relay board, but the outside temp was close to 100 deg so I went back in the garage and turbos. I have been reading alot on VE and spark advance tables and finally feel comfortable making changes. I did set the req_fuel back to the calcd value and increased the WUE value 60% and was able to find a steady idle, but will go back to surging after the warm up. From what you guys have suggested and what I have read I just need to spend some quality time adjusting VE table settings. Thanks again for all the help and I'm sure I will be posting a few logs and asking for opinions in the next few weeks.
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david martin
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Posts: 30
Joined: Sun Feb 13, 2011 10:12 pm

Re: Ford 289 surges and coughs

Post by david martin »

Made some progress today. Increased the VE values under 1500 rpm and happy to report achieved a better idle, even after WUE completed. I was also able to measure the AFR which confirmed a lean mixture.
kjones6039
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Joined: Sat Jul 22, 2006 7:02 pm
Location: Eureka, Nevada USA
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Re: Ford 289 surges and coughs

Post by kjones6039 »

Great! Looks like you're making progress!

Ken
1979 Corvette - 383 CID SBC w/ Holley Pro-Jection 900 CFM TBI, 4-85 lb lo-z injectors & Walbro 255 pump
MS2 v3 w/ms2extra 3.4.0 Release
36-1, Delphi LS2/7 coils in wasted spark, driven by v2.0 logic board from JBPerformance
Spartan Lambda Sensor from 14point7
HPjunkie
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Joined: Fri Dec 28, 2007 6:25 am
Location: Rockford Ill

Re: Ford 289 surges and coughs

Post by HPjunkie »

What % did you set for dead cold? and what kind of taper did yoiu use?
2332 Air-cooled VW, EDIS, Garrett turbo, MSII, 15psi, 1300lb car. : )
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