Birth of my Home Made ECU

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07-23-2005, 04:55 PM

#11

Spenser

3.0 BAR

Join Date: Aug 2003

Posts: 3,930

Re: Birth of my Home Made ECU

check out pgmfi.org.... there are some brighter people who frequent those boards.

07-24-2005, 02:13 PM

#12

absolutezroo

1.5 BAR

Join Date: May 2004

Location: Westminster,MD

Posts: 1,032

Re: Birth of my Home Made ECU

Thats a very nice idea you have there. Please keep us updated. I know i'm interested in how your getting the injector to fire when lean for water injectin..i like it. Anyways, keep up the good work and let us know.

07-25-2005, 10:33 AM

#13

Tom-Guy

0.0 BAR

Join Date: Feb 2003

Posts: 0

Re: Birth of my Home Made ECU

Mike Sitar did something like that on his budget 351W Capri. Check www.toohighpsi.com for details.

I also advocate tuning the carb - up to a point. Buying tiny tiny drill bits to up the size of your carb jets for a richer mixture under boost is a good idea. Then do like Sitar and cut on a cold start injector with a Hobbs switch or an opamp run to a MAP sensor. Then use your AF based PIC board to act as a safety measure.

When the myo-p.com electronic water injection controller boards become available, how about I smuggle one to you inside a Teddy Bear? With water injection you 1) don't have to run richer AFRs and 2) don't have to worry about combustion chamber temps damaging the engine.

07-27-2005, 10:44 AM

#14

neil85ae86

0.5 BAR

Join Date: May 2003

Posts: 152

Re: Birth of my Home Made ECU

Quote:

Originally Posted by chinoy

Megasquirt makes me feel like ive been put in a straight jacket. i.e. you cant customize anything. You cant say hum I want to do this. And then I want to do that and then I want to tie in my Ignition like that.

what! ...where have you been, their are litterally dozens and dozens of documented mods for the Megasquirt, it can support numerous MAP sensors, ignition systems etc. etc. etc. ...you could add anything you want with a bread board and some simple documented circuits that are available, or invent your own mods. ...I don't think their is anything you could possibly add that hasn't already been done, I think their are even mods to do sequential now if you must have it (their is one crazy guy using it to control his beer fermenting systems! haha)

I had very little soldering experience and mine went together without a hitch, the instructions are top notch. I've since butchered the ---- out of it and it keeps on ticking, I've ran numerous different custom firmware, I run Ford igntion on a Toyota, I could have ran stock dizzy but I prefer no dizzy.

How much flexibility do you need!

BTW, a guy local to me has his 3cyl Suzuki pushing 15psi, Megasquirt is controlling fuel and ignition

Neil