Hi all,
First let me say that I'm new to megasquirt, and I'm not a mechanic. I took on this project to stretch myself, and learn a bit. I've read the megamanual through and through, and will probably read it a few times more, since there is so much to know.
The project is a turbo'd 87 CRX SI with 1989 Integra D16A1 swap. When I bought this car, it had a 1987 Integra D16A1 and was running MS1 on a v2.2 board. It didn't make the trip home though, and threw a rod through the block. Since then, I have swapped in the '89 engine, and upgraded to MS2 on the same mainboard. The newer engine added an electronic advance distributor, and I thought to take advantage of spark timing. I also installed the Zeal daughterboard for VR signal conditioning of the TDC sensor.
I'm not totally sure of my options for spark control (well, I think I AM sure, but I'm not sure that I like the answer). Is there a way to trigger the stock ignitor using the hardware I already have, or do I need to build a BIP373 style circuit to trigger the coil directly, or convert to an HEI module? What is the easiest/best course of action (if those two things can ever be combined!)
Spark control options
Moderators: jsmcortina, muythaibxr
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- Super MS/Extra'er
- Posts: 17499
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Spark control options
Honda's ignition modules are ground triggered. Wiring the negative terminal of D14 straight to the ignition module should work. Set the spark output to Going High.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: Spark control options
Thanks Matt. I had read that note on the diyautotune site, but initially ruled it out as an option because it's stated for a V3 mainboard. Now that I look further, I see that there is an equivalent LED on the v2.2: D17.
Tunerstudio doesn't have an option to use D17 as a spark output. However, choosing D14 seems to work on the stim.
Tunerstudio doesn't have an option to use D17 as a spark output. However, choosing D14 seems to work on the stim.
-
- Super MS/Extra'er
- Posts: 17499
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Spark control options
Sorry, missed the version number. D17 is the V2.2 equivalent.
Matt Cramer -1966 Dodge Dart slant six running on MS3X