megasquirt v3.0
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Junior Member
Joined: Jan 2006
Posts: 3
Likes: 0
From: Irmo, SC
Car: 87 k5, 94 c1500
Engine: 350, 4.3
Transmission: 700/700
with that being said, what kind of reading should i be doing to prepare for megsquirt? should i just search here or is there somewhere else i should be reading up in it?
thanks for the responses.
thanks for the responses.
start at www.msefi.com
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
MS V3 can control the TBI/TPI distributors without installing all of the Ford nonsense. I have a MS V3 board.
Senior Member
Joined: Nov 2000
Posts: 601
Likes: 0
From: Queen Creek, AZ
Car: 91 Formula
Engine: 383 HSR
Transmission: 5th 700R4
Axle/Gears: 3.89
Tibo what injection system are you using I have a few questions about mine I'm just working on my wireing right now and have am a little confused on a couple of issues.
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I had my MS installed on a 4.3L TBI V6 that was bone stock fuel/ignition wise. I didn't have to run any additional wiring except the IAT sensor, and running a wire for a relay that was hot in run but not when cranking. The purpose of this is it locks the timing on the HEI module when starting. Read the HEI pages, that's what I did and it worked out just fine.
This should tell you what you need to know about the HEI system and installing it. The only difference between the 7 and 8 pin wiringing colors is that you'll have a black/red wire in your harness you connect to ground.
ED:if you havn't read through enough to figure out how to read the HEI, read a LOT more. custom EFI is inherintly a dangerous business if you don't know what you're doing, a misconfiguration can cause some serious damage. I had my MS configured for high-Z injectors, but TBI injectors are low-Z. Needless to say, $100+ of injectors later and some injector drivers I had a valuable lesson learned about why you don't configure EFI computers at 3AM.
This should tell you what you need to know about the HEI system and installing it. The only difference between the 7 and 8 pin wiringing colors is that you'll have a black/red wire in your harness you connect to ground.
ED:if you havn't read through enough to figure out how to read the HEI, read a LOT more. custom EFI is inherintly a dangerous business if you don't know what you're doing, a misconfiguration can cause some serious damage. I had my MS configured for high-Z injectors, but TBI injectors are low-Z. Needless to say, $100+ of injectors later and some injector drivers I had a valuable lesson learned about why you don't configure EFI computers at 3AM.
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