I figured it was time to start a new thread. The code has been done for a few weeks. Now its up to you SRT folks to pony up a few hundred bucks and give it a try.
It's working on the scope and Steve @ RS-autosport has spark running on a test vehicle. There's still some minor issues to resolve, but only with the trigger configuration. The NGC crank decoder works flawlessly.
For those of you that don't know what a megasquirt is please read up on http://megasquirt.info . It's basically a DIY stand alone ecu with all kinds of cool features (like boost control, traction, 2-step, nitrous, water injection, etc). You can build it yourself or buy them pre-built through www.rs-autosport.com. Since it reads the stock crank trigger install is real simple. Not much more difficult than installing a DTEC or SAFC.
Need some SRT owners that don't mind beta testing and have pretty good mechanical/computer skills. You need to be able to use the megasquirt software, upgrade firmware on the box as well as verify ignition timing, etc. Basically need some power users that aren't afraid to get under the hood. If that sounds like you then order up a megasqurit and get busy. You wont regret it.
This code is confirmed to work. Still waiting on timing light confirmation for timing accuracy though...
It will be what powers my car with the AMS gt35r setup and built motor.
c'mon, everybody is jocking the acceleration rate based traction control on the aem, how 'bout using a unit that can read the rear wheel speed sensor and modify off of that to just figure out when the tires are spinning and correct accordingly.
It will be what powers my car with the AMS gt35r setup and built motor.
c'mon, everybody is jocking the acceleration rate based traction control on the aem, how 'bout using a unit that can read the rear wheel speed sensor and modify off of that to just figure out when the tires are spinning and correct accordingly.
No question the MS is a powerful unit and is cheap to boot. I think many people just do not want to DIY so to speak.
I know the MS is HUGE in the first gen 95-99 Neon game as they really do not have many other options.
Mike
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2007 Subaru WRX stock with some Buschur Racing parts
for those unfamiliar, megasquirt is basically a grass roots, diy standalone system. I ran this on my 1997 2.2 turbo 3spd dodge avenger, controlling 8 fuel injectors and full timing and everything.
it's COMPLETELY OPEN SOURCE, which means the userbase (which is HUGE for this) makes up additions and changes to further the development of this. Up to this point, you would have needed to run a trigger wheel on the crank to use it, but they've since cracked the factory crank signal to where even that isn't needed.
Installation would be alot more then the aem, you must wire everything up, not simply install the unit by plugging in the pcm, but quite frankly, once you learn the system and know how to make changes in it, I feel it's more powerful then damn near any standalone out there (simple fact, if there's a feature somebody wants... there's people out there that MAKE it happen, nitrous activation, traction control, meth injection control, anything and everything can be done with a megasquirt system)
Do we have tables written for the other sensors? Can this be done dynamically with the UI at runtime?
namely the iat and ect?
I take it since the stock PCM is still in place it runs all the basics like the voltage regulator, guage cluster, and IAC motor for idle?
Hmmm.... I must admit I have been looking for time to play with the DIY EMSs (although I must admit I was more interested in the nicer VEMS)... This is very tempting. If it is simply just wiring in a tap for the CKP/IAT/ECT signals, running my injectors off the MS and splicing the coil trigger wires it wouldn't take me more than a night to have up.
Any known bugs? I noticed in the last thread someone mentioned having a studdering problem. This still a defect?
I'm getting pretty interested in this unit. I dont know much about megasquirt, but I have been looking through the forums and their site and it looks pretty easy to get running. The software looks like it needs some more "user-friendliness" to it, but thats understandable. Hopefully I should be ordering one of these this week and testing it out.
So am i under the impression that all the code is availble for our cars (fuel/spark) so I can just install, load the parameters, and have a car thats gonna fire up, or am I going to have to write any code or find code elsewhere?
I would be purchasing from Rs-auto so please let me know if their package is complete. thanks!
no coding so to speak to get it to fire, but you are going to have to tune the maps from scratch.
What I did with the avenger was installed fuel control first, I then got that working as smooth as possible, and switched over to ignition control after that, it made the transition easier for me and less bugs to work out
Do we have tables written for the other sensors? Can this be done dynamically with the UI at runtime?
namely the iat and ect?
Someone needs to do the work on that part. I personally don't have an SRT to test with. I do know everything is configurable via software or you can actually change the bias resistor on the board to make it read properly.
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I take it since the stock PCM is still in place it runs all the basics like the voltage regulator, guage cluster, and IAC motor for idle?
Thats the idea. I made a wiring diagram thats located on:
Look in the "external wiring" section for 95-02 Neon. As you can see the external wiring is really very simple. It's actually not much more complex than the other "piggy back" systems. I keep the stock ecu to do all the boring stuff. The megasquirt only handles spark/fuel. It can also do boost control, idle, water injection, nitrous, etc. Being open source, you can do whatever you want. It's perfect for "geeks".
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(although I must admit I was more interested in the nicer VEMS)... This is very tempting.
Personally I'd be looking at MS-2 before VEMS. Dunno if you've ever actually tried to read the manual for that thing its a nightmare. Also, the support base is very small. The megasquirt has one of the best support communities I've ever seen.
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Any known bugs? I noticed in the last thread someone mentioned having a studdering problem. This still a defect?
Um, well, yeah. I just wrote the code and I don't have an SRT to test it on. The only guy doing the testing was borrowing a car from a friend. I need some "geeks" to build a megasquirt, load the code and get the trigger points worked out. The code its based on (029 series) is pretty solid but there's some newer versions out. However, we can't get the NGC code added to the released source tree until someone gets it running on a car and confirms the triggers are good.
So, if someone wants to do a full stand alone for < $500 and doesn't mind getting "geeky" then dive right in. Think of it like the AEM except you don't have to wait for someone else. You can be part of the development. 8)
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Megasquirt reads NGC crank signal. Need testers...
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