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Old 04-04-2007, 10:56 PM   #1
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Default Question for Miatasquirt owners

So I recently got my miatasquirt from KingofL337, my car is a '95 and this was the first miatasquirt he built for an OBDI 1.8L.

I'm starting to install it and have a few questions.

The miatasquirt Adam sent me has one wire available for an input (I assume that is what it's for). I don't know which input this is supposed to be and Adam didn't send me any instruction.

My question is where should I input the wideband 02 and the AIT signals?

I know these are questions for Adam but I only have work contact info for him, I was hoping someone else who had gotten a miatasquirt from Adam would have some ideas for me.

Thanks guys
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Old 04-04-2007, 11:16 PM   #2
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Here is a picture for reference. The harness coming from the stock ecu into the megasquirt has one wire coming out of it (yellow), I assume this is for either the wideband input or AIT input.

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Old 04-04-2007, 11:57 PM   #3
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Well it is hard to say what that wire is for. Could be o2 if you are running a wideband. Could be the IAT sensor otherwise. I would actually bet it being the IAT sensor.
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Old 04-05-2007, 12:03 AM   #4
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I assumed it was for the AIT sensor because Adam and I never talked about running a wideband o2 sensor.

If the yellow wire is for the AIT how then should I hook up the wideband?
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Old 04-05-2007, 01:34 AM   #5
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Open up the DB37 connector and see which pin it goes to. I'll put my money on it being the IAT sensor. You can hook your wideband up to the regular o2 pin or make a new input.
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Old 04-05-2007, 01:46 AM   #6
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I agree, it must be AIT sensor input and as mentioned above, you would just splice your wideband input directly to your ecu harness before it even gets to the stock ecu. If you have an LC1, you can program the input to put out a narrowband signal for the stock ecu, or a wideband output for when you are ready to run megasquirt daily.
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Old 04-05-2007, 08:47 AM   #7
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why does he have 2 fuel switches?
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Old 04-05-2007, 10:20 AM   #8
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Quote:
Originally Posted by magnamx-5 View Post
why does he have 2 fuel switches?
Not sure, you would have to ask Adam. It has something to do with the 1.8 injection being different from the 1.6.

I have a plx m300 which also has two outputs, one nb and one wb.

I'll call Adam today and see what he says.

Thanks guys
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Old 04-05-2007, 10:23 AM   #9
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There are 2 fuel switches because on the 1.8 engine there are 4 lines for fuel. So you have to have 2 switches. That messed me up for the longest time but I finally got that fixed myself.
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Old 04-05-2007, 11:02 AM   #10
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I have one 4 pole switch for mine. Works fine.
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Old 04-05-2007, 11:25 AM   #11
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Quote:
Originally Posted by shuiend View Post
Well it is hard to say what that wire is for. Could be o2 if you are running a wideband. Could be the IAT sensor otherwise. I would actually bet it being the IAT sensor.
X2

Adam wired mine up to use the stock CLT (which is a bit off) and left a wire out for the IAT.
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Old 04-05-2007, 11:28 AM   #12
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Quote:
Originally Posted by ecugrad View Post
X2

Adam wired mine up to use the stock CLT (which is a bit off) and left a wire out for the IAT.
Have you messed with easytherm at all to correct it?
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Old 04-05-2007, 11:59 AM   #13
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Have you messed with easytherm at all to correct it?
Nope. I had intended to run a GM CLT the whole time, so I just wired it in.
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Old 04-05-2007, 02:01 PM   #14
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Quote:
Originally Posted by cjernigan View Post
I have one 4 pole switch for mine. Works fine.
I can't remember how I wired mine, but I want to say I had one switch for fuel and two for spark. Can't remember why either. Seemed like a good idea at the time and it worked so... **** it.
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