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-   MEGAsquirt (https://www.miataturbo.net/megasquirt-18/)
-   -   megasquirt on low imp 440s (https://www.miataturbo.net/megasquirt-18/megasquirt-low-imp-440s-17410/)

juhanis 02-24-2008 04:59 AM

megasquirt on low imp 440s
 
3 Attachment(s)
here it is... no resistors, no tricks, well, maybe some fairy dust. first of all the pics...
Attachment 214395
that's a horrible afr
Attachment 214396
idle shot
http://img.photobucket.com/albums/v504/Juhanis/omgz.jpg
under hood
Attachment 214397

here is the video of the "impossible"
http://www.youtube.com/watch?v=8yt63J549Zo

magnamx-5 02-24-2008 05:10 AM

:rofl: dude you kill me :D good job

juhanis 02-24-2008 05:13 AM

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.

paul 02-24-2008 09:06 AM

OK, so who wants to buy my 6 Supra Black Top Low Z 440 injectors? cheap.

olderguy 02-24-2008 09:33 AM


Originally Posted by paul (Post 218678)
OK, so who wants to buy my 6 Supra Black Top Low Z 440 injectors? cheap.

Maybe include with Eric's MS?

paul 02-24-2008 09:36 AM

I'll PM you about this Bruce.

y8s 02-24-2008 11:27 AM

so the statement about not being compatible was more of a cautionary one rather than a "just wont do it" one?

therieldeal 02-24-2008 11:41 PM

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?

juhanis 02-25-2008 06:02 AM

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.

Jefe 02-25-2008 06:17 AM

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 ;))

Braineack 02-25-2008 07:39 AM

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.

Matt Cramer 02-25-2008 08:49 AM


Originally Posted by y8s (Post 218697)
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.

y8s 02-25-2008 10:20 AM


Originally Posted by Matt Cramer (Post 219074)
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.

juhanis 02-26-2008 05:19 AM


Originally Posted by Braineack (Post 219062)
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 ass on the shipping.


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