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megasquirt on low imp 440s

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Old Feb 24, 2008 | 04:59 AM
  #1  
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Default megasquirt on low imp 440s

here it is... no resistors, no tricks, well, maybe some fairy dust. first of all the pics...
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that's a horrible afr
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idle shot

under hood
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here is the video of the "impossible"
http://www.youtube.com/watch?v=8yt63J549Zo
Old Feb 24, 2008 | 05:10 AM
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dude you kill me good job
Old Feb 24, 2008 | 05:13 AM
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hehe, i just couldnt think of how else to prove it. i was annoyed the last time someone said that my original video wasnt true.
Old Feb 24, 2008 | 09:06 AM
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OK, so who wants to buy my 6 Supra Black Top Low Z 440 injectors? cheap.
Old Feb 24, 2008 | 09:33 AM
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Originally Posted by paul
OK, so who wants to buy my 6 Supra Black Top Low Z 440 injectors? cheap.
Maybe include with Eric's MS?
Old Feb 24, 2008 | 09:36 AM
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I'll PM you about this Bruce.
Old Feb 24, 2008 | 11:27 AM
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so the statement about not being compatible was more of a cautionary one rather than a "just wont do it" one?
Old Feb 24, 2008 | 11:41 PM
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did you have any issues with voltage spikes from the injectors? or did you isolate the injector circuit from the rest of the board? ... or are you just lucky?
Old Feb 25, 2008 | 06:02 AM
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i'm just going to say, i dont know. they just work. i dont really have any issues, and i never have with either setup. the car runs great, i'm now at 10-11psi and climbing. my car must be magical i dont know. plus i didnt build the ms, neogenisis/braineack did.
Old Feb 25, 2008 | 06:17 AM
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I'm using DSM 450's...
So is this guy..
http://www.msruns.com/viewtopic.php?t=10708

I must have missed the part where it says we can't use low imp?

Nice vid (not as good as your EMB one though )
Old Feb 25, 2008 | 07:39 AM
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you silly guy, one of the benefits of the MS is it can run low ohm injectors without resistor packs. you might want to read up on how to correctly setup the PWM settings to run them a little better.
Old Feb 25, 2008 | 08:49 AM
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Originally Posted by y8s
so the statement about not being compatible was more of a cautionary one rather than a "just wont do it" one?
Yes, it's more cautionary than a warning that it's impossible. The problem isn't that Megasquirt is unable to drive the injectors, so much as a noise issue.
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Old Feb 25, 2008 | 10:20 AM
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Originally Posted by Matt Cramer
Yes, it's more cautionary than a warning that it's impossible. The problem isn't that Megasquirt is unable to drive the injectors, so much as a noise issue.
That's really easy to fix with a five conductor (4x inj + ground) shielded cable, shield-grounded at the MS box (not at the injectors!). Should reject all the noise you can throw at it. You can get overkill wire by the foot at mcmaster for about $3/foot. Probably elsewhere much cheaper.
Old Feb 26, 2008 | 05:19 AM
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Originally Posted by Braineack
you silly guy, one of the benefits of the MS is it can run low ohm injectors without resistor packs. you might want to read up on how to correctly setup the PWM settings to run them a little better.
i'll have to look into that, sorry for kinda calling you out on that other thread. i have no idea how the plug wires were on the wrong coils i thought it was something more serious, it worked on my stock stuff. it works GREAT now, so far at 13psi and rising. and thanks for hauling *** on the shipping.
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