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MSD 8920 Tach Adaptor w/4 PIN HEI


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#1 mbruneaux

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Posted 10 July 2018 - 01:14 PM

Hello all,  I've bypassed my ignitor with a 4 pin HEI module but need to install the MSD 8920 Tach adaptor, What's the best way to do so?  I can find plenty of references to installing it with a MSD 6A box but not with a 4 pin.

The tach reference for the 8920 would be the metal "Filter" coming off the coil?

I'm trying to finish the MAFT 2nd Gen install.  Thank you

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Edited by mbruneaux, 10 July 2018 - 01:18 PM.

Canterbury, CT
1989 Chrysler Conquest TSi (Project Race Car) Build thread http://www.starquest...opic=147910&hl=
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2003 Chevrolet Suburban 2500 8.1  To tow the two hay burners
1998 BMW 528i 5 Speed because the Suburban gets 10 MPG

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#2 scott87star

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Posted 10 July 2018 - 01:38 PM

You shouldn't need a tach adapter.
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#3 speedyquest

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Posted 10 July 2018 - 02:26 PM

Maybe he thinks he needs it because his Maft Gen 2 is reading the rpm's wrong? And if that is the case there is a firmware update for it that corrects that issue.

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#4 mbruneaux

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Posted 10 July 2018 - 02:35 PM

I was under the impression I needed it for the MAFT install.  I wasn't reading any rpms on the MAFT but I had fried my ignitor somehow.  Maybe I should reinstall the MAFT and see if it works.  It's been so long since I worked on it I forget sometimes why I bought something... <_<
Canterbury, CT
1989 Chrysler Conquest TSi (Project Race Car) Build thread http://www.starquest...opic=147910&hl=
2001 Pontiac Grand Prix GTP (Daily Driver)
2003 Chevrolet Suburban 2500 8.1  To tow the two hay burners
1998 BMW 528i 5 Speed because the Suburban gets 10 MPG

Second place is S*** place , eh.  - Stéphane Peterhansel




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