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Re: MSD Atomic EFI problems. Help please
[Re: demon]
#1429916
05/19/13 05:24 PM
05/19/13 05:24 PM
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Joined: Dec 2003
Posts: 22,696
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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A  for updating your title taking MSD off the hook on your "efi" issue, its the right thing to do, but not done often.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: MSD Atomic EFI problems. Help please
[Re: DaytonaTurbo]
#1429918
05/22/13 10:29 AM
05/22/13 10:29 AM
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Joined: Feb 2006
Posts: 1,179
Canada
demon
OP
super stock
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OP
super stock
Joined: Feb 2006
Posts: 1,179
Canada
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Quote:
Ah ha! How about some credit where credit is due!  Glad to hear you got it fixed. 
yes I do owe you some credit! Thanks for the tip about the reluctor gap!
Something so simple yet I overlooked it at first.
I am happy with the MSD Atomic system. I think I'll be installing them on more of my cars.
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Re: MSD Atomic EFI problem solved! MSD was not at fault
[Re: demon]
#1429919
05/22/13 12:23 PM
05/22/13 12:23 PM
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Joined: May 2013
Posts: 1
Michigan
70Plum
member
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member
Joined: May 2013
Posts: 1
Michigan
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Quote:
The unit takes it's rpm signal from a white wire connected to the neg side of the coil.
No fault codes on the handheld but it shows no RPM on the display screen
I am about to install Atomic EFI on my 440 Challenger and it seems to me that you can't just attach the white wire to the neg side of the coil. The wiring diagrams all indicate connections to MSD 6A boxes, HEI, or Ready to Run distributors to get a 12V square wave signal.
After you fixed the reluctor gap did your display on the handheld start showing an RPM? If so, then I guess this is the ticket. But there is a post on the Atomic EFI forum about this from a user that had a similar issue to yours. The MSD response was
"It sounds like the Atomic is not getting a clean RPM signal from the coil negative. Unless you plan on installing an MSD Ignition box, I suggest using a GMR Pick-up (PN 8910) to provide a clean RPM signal to the Atomic."
You can read the whole thread at:
http://www.atomicefi.com/forum.aspx?g=posts&t=17019
I would be interested in your final wiring on this since I have standard Mopar Orange Box and don't want to fully convert to MSD 6A at this time. Maybe I will some day to take advantage of the Atomic controlling the timing, but for now I was thinking I might need this GMR Pick up or something similar. If I can just connect to the neg side of coil that would be easy.
Have gathered most of the parts for my Atomic install -- I am running a return line with Aeromotive regulator. Hope to install in the next few weeks.
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Re: MSD Atomic EFI problem solved! MSD was not at fault
[Re: 70Plum]
#1429920
05/22/13 12:45 PM
05/22/13 12:45 PM
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Joined: Jan 2003
Posts: 75,042
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,042
U.S.S.A.
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Quote:
Quote:
I would be interested in your final wiring on this since I have standard Mopar Orange Box and don't want to fully convert to MSD 6A at this time. Maybe I will some day to take advantage of the Atomic controlling the timing, but for now I was thinking I might need this GMR Pick up or something similar. If I can just connect to the neg side of coil that would be easy.
Do yourself a huge favor and dump the orange box now, it's an outdated design and doesn't give anywhere near the performance it should.
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