how many of you run megasquirt as a piggy back
03-30-2010, 01:17 PM
#1
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how many of you run megasquirt as a piggy back
i'm just trying to see if there is any benifit to running a megasquirt as a full stand alone. if you can do all the same fuel and spark controll by using it as a piggyback then why the extra work? Are there any features that don't work as a piggy back? Before you all jump and attack. I am new with megasquirt and considering it greatly.
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03-30-2010, 02:14 PM
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With a 94 the MS is able to run full standalone easily. I dont know why you would bother piggybacking it.
I can understand piggybacking on a 99+, since the alternator, fans, VVT, etc is all controlled by the ECU, but even then you can make circuits to control that stuff.
I can understand piggybacking on a 99+, since the alternator, fans, VVT, etc is all controlled by the ECU, but even then you can make circuits to control that stuff.
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03-30-2010, 03:09 PM
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I have a 94 with MS installed in a parrallel setup. I did it this way because 3 years ago when I did the install it was how most people were doing it and no one had AC support figured out. Right now the only thing that my stock ECU controls is idle. Once I get MS3 running great I plan on switching to full standalone.
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03-30-2010, 04:15 PM
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I might call it a slight deficiency that with the stock ECU controlling the fans, they come on at a slightly higher temperature than I'd like. I'm in the process of upgrading to MS-II and while I have the case open I'm pondering adding the fan control circuit.
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03-31-2010, 02:41 PM
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https://www.miataturbo.net/forum/t20954/
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03-31-2010, 02:47 PM
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parallel installs are so 2007; only did like 2 all of last year, and only for people that worried about emissions.
Heck MS-III has an idle up with a/c activation feature now
The closed loop code alone for MS-II alone is supposed to be pretty good. The few times I've driven standalone I had no idle issues myself, with a/c wasn't any better/worse than a setup running Hydra...
Heck MS-III has an idle up with a/c activation feature now
The closed loop code alone for MS-II alone is supposed to be pretty good. The few times I've driven standalone I had no idle issues myself, with a/c wasn't any better/worse than a setup running Hydra...
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03-31-2010, 04:35 PM
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it's an awesome way. the only issue is the 3904 transistors that come in the kit, the v2.2 boards used pn2222 transistors which are rated for 1A, the 3904s found on the v3.0 are like 300mA; not enough for the fan relay.
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03-31-2010, 09:47 PM
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Last edited by ScottFW; 04-03-2010 at 01:28 PM.
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