Hei mixed info

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travisc454
MegaSquirt Newbie
Posts: 2
Joined: Thu May 03, 2012 6:48 pm

Hei mixed info

Post by travisc454 »

Sorry in advance for the noob question. I've searched like crazy and all it has done is turned up mixed info and made me very frustrated. I bought the DIY carb to efi package from DIYAutoTune (ms-II v.3). It comes with the HEI input mod kit. Im on Step 22. I have an 8-pin HEI. I want to do this the best way the first time.....and not F it up. I will not be running an HEI forever. I can see there are different ways to do this but even the instructions that appear to be the same have little differences. And the fact that they gave me the HEI mod jumper kit throws me a little curve ball because it comes with a little strip of male pins that i assume i cut individual ones and solder them in somewhere. Which instructions should i follow?
here it says" http://www.megamanual.com/ms2/GM_7pinHEI.htm
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here it says: http://www.DIYAutoTune.com/tech_article ... _v8_v6.htm
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here it says: http://www.megamanual.com/ms2/inputHEI.htm
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travisc454
MegaSquirt Newbie
Posts: 2
Joined: Thu May 03, 2012 6:48 pm

Re: Hei mixed info

Post by travisc454 »

Sorry i didn't realize it chopped of the text. Forget all of the above. I know its too long and no one is going to read it. can someone tell me the best way to assemble for HEI as i found at least four different instructions on how to do it.
Bernard Fife
Master Squirter
Posts: 475
Joined: Thu Oct 29, 2009 12:54 pm

Re: Hei mixed info

Post by Bernard Fife »

The 1st method described in the megamanual has worked fine my 406 for years. However, I assume the other methods have worked for users too. The important thing is to use only one set of instructions. Just be careful because some code variants require certain mods because they need too trigger off a specific edge (with B&G code the user can set the trigger edge).

Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
WASyL
Helpful Squirter
Posts: 102
Joined: Tue Dec 16, 2008 7:46 am
Location: Warszawa - Poland

Re: Hei mixed info

Post by WASyL »

I run 8-pin HEI (sbc engine) with first instruction you gave, MSII V3.0 code B&G 2.905
+5V to Ignition module given thru relay as shown here:
Image

best regards
Pontiac Firebird 305 LT1 intake, L82 cam
MegaSquirt II with mod's + TPI adaptor board, MSExtra 3.3
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