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Old 11-20-2007, 07:39 PM   #1
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hmmm i installed the MS according to option #1 (having the ECU control fan, ac, etc etc.)

and i had the MS controlling timing/fuel

this was built by kingofl337, i'm sure you all know him

anywho, i plugged it in, put it on the ECU switch(since it had the choice between ECU and megasquirt) and the car started to idle badly, and shoot out white smoke!....

i immediately took it back off, plugged back in my old ECU and it runs fine again (thank god)

anyone know what hte problem might be?

by the way... it has the IAT wire hanging and the fuel pump wire hanging.... i believe i don't have IAT, but AIT... and as for hte fuel pump wire, where do i hook that up to?
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Old 11-20-2007, 07:58 PM   #2
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fuel pump relay wire is what it is, sorry if the previous post wasn't specific enough
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Old 11-20-2007, 08:04 PM   #3
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you need to share the AIT signal with the stock ecu then.

the fuel pump wire needs to hook to the light green wire off the fuel pump relay under the dash, its to your left on a yellow plug.

you were most likely running horribly lean.
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Old 11-20-2007, 08:05 PM   #4
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thanks braineack, really appreciate the help... and i dont doubt i was running horribly lean, i was scared as hell.... the AFR was 15 the whole time at idle.... which was already scary cuz i idle at 12-13
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Old 11-20-2007, 08:41 PM   #5
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15 at idle is no big deal... that's about where mine idles on the stock ecu/injectors. now.... 15 under boost.... that would be bad.
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Old 11-20-2007, 08:43 PM   #6
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lol thanks for the relief it had a little fuel left in the system before it was gonna die... thank god, when i plugged the stock ecu back in it idled a little funny n idled back just okay
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Old 11-21-2007, 02:26 PM   #7
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you can just flip the switchs on the ecu and it will revert to the oem ecu
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Old 11-21-2007, 03:19 PM   #8
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it was running off of OEM setup, which was really weird
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Old 11-21-2007, 05:13 PM   #9
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i wired up all the stuff that was needed.... same effects as before.... grey smoke flying out.... and guess what? FUEL PUMP was working fully (the pump was at 65psi) and uhh, i had both switches on ECU instead of MEGASQUIRT....
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Old 11-21-2007, 05:15 PM   #10
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maybe someone can help me figure this out? i'd be more than willing to send it out if someone can take a look at it
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Old 11-21-2007, 05:43 PM   #11
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turns out i was running omega rich...... dumbest problem i've ever encountered (i took off the apexi afc and the thing was running 10AFR!!!!!)
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Old 11-21-2007, 05:45 PM   #12
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well yeah that will do it i am glad you got a wide band on that sucker and actualy paid attention to it. FWIW the best power is to be had around 12-1 or so.
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Old 11-21-2007, 10:13 PM   #13
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you may want to update the firmware to the newest version as well, just make sure the switch is on oem for spark so it doesn't harm the coils durring flashing.
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Old 11-22-2007, 02:08 AM   #14
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the MS won't power on for some reason.... are one of the three lights suppose to light up?
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Old 11-22-2007, 03:03 AM   #15
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The two outer lights light up when you turn on the key with the DIYautotune mods. The middle led might light up with warmup enrichment, though im not sure.
If it won't power on you might have corrupted firmware. Try reflashing using the boot jumper.
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Old 11-22-2007, 04:53 AM   #16
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thanks for the help cjern, i will do it tomorrow and give it another go

like kingofl337 said, it needed a firmware update anyways
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Old 11-22-2007, 01:00 PM   #17
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I don't believe kingofl337 built them with diy's mods, the transistors are removed preventing the LEDs from lighting.

Take a few pics of your board, front and back and we'll have it running for you.
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Old 11-23-2007, 08:38 PM   #18
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thanks braineack, you're the best!!
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Old 11-23-2007, 09:50 PM   #19
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Old 11-23-2007, 09:50 PM   #20
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is that clear enough? if not i'll try to get a clearer picture for you
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