I just got MegaSquirt to support our HEP signal

[UnaClocker]

If anyone needs an MS built to work with a TD, give me a holler. I run NeonSquirt.com, and build MS's for the Neon guys normally. TD's are going to require a second input circuit to be built, to handle both of the HEP sensors in the distributor. And we've got 3 ignition options, single coil w/ distributor. Wasted spark with a Neon coil. Or finally, one coil per plug "Coil On Plug".
I think MegaSquirt is the greatest thing since sliced bread, but I guess I may be a bit biased. I have spent quite a bit of time in the past reflashing LM's, SMEC's and SBEC's, but there's a lot to be said for being able to datalog with a laptop, see all of the sensors coming in on full screen gauges on the laptop, change things while driving down the freeway (not exactly safe, but I do it all the time). It goes way beyond a "flashable SMEC" approach.

[crazymadbastard]

Good to hear you are making progress, I have a "super 420?" unit I will start messing with, but probably just to datalog with it till I go to 16v.

[glhs0426]

I've looked all over the msefi and msextra forums and can't seem to find the code for the turbo dodge distributor.

[puppet]

UnaClocker ... is MS ... or can it be made to work with our T3 flywheel signal yet?

[UnaClocker]

Quote:

Originally Posted by glhs0426 I've looked all over the msefi and msextra forums and can't seem to find the code for the turbo dodge distributor.

www.msextra.com, you need an account to be able to get into the MS2/Extra development section. Once you're in there, the 2.0.2alpha code has support for the 2.2/2.5 Chrysler dizzy.

T3 support, nope, never going to happen. There's limitted room for wheel decoders in the code, they want to support widely available common engines. The T3 simply wasn't widely available, nor is it common. That's not saying it can't be done.. MS2/Extra is written in C, compiled with GCC, and it's open source.. Someone could add it themselves if it really came down to it.

[1badgn]

subscribed

[Joryn]

Hey Una, do you have any pics of your install / setup? One of the biggest things keeping me from doing something like this is making sense of the wiring. Be nice to see how someone put it all together into an actual working unit

Thanks!
Joe

[cawcislo]

Could someone explain this whole Megasquirt system to me and what's involved. Being able to make changes on the fly sounds excellent. What do I need to buy to make this work on an 87 T2 LM. How much is the megasquirt computer? Does it replace the T2 LM in the car? How much wiring do you have to do? I'd like to try this as I can't seem to get a good 3 bar cal for my car. Plus burning chips is a pain rather than a quick change to a program. Thanks.

[crazymadbastard]

pay our new vendor a visit:
DIYAutoTune.com Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products

[t3rse]

Quote:

Originally Posted by puppet UnaClocker ... is MS ... or can it be made to work with our T3 flywheel signal yet?

Looking at the code, it doesn't look too hard to do.

[UnaClocker]

Quote:

Originally Posted by Joryn Hey Una, do you have any pics of your install / setup? One of the biggest things keeping me from doing something like this is making sense of the wiring. Be nice to see how someone put it all together into an actual working unit Thanks! Joe

Yeah, I'll try to get some pictures of it sometime soon. Generally what I did was desolder the big connector off of a spare SBEC and ran the wires from the MS harness to that plug, and soldered them on to the appropriate pins. Makes it a pretty well plug and play deal.
As for DIYAutotune, they tend to only sell generic MS's, not ones custom built to our application. You can buy a kit from them and assemble it yourself, which you might as well do because you'll be soldering on their pre-assembled unit quite a bit to add the second tach input circuit you'll need as well as the extra spark output circuits if you choose to go that route.

[Joryn]

Quote:

Originally Posted by UnaClocker Yeah, I'll try to get some pictures of it sometime soon. Generally what I did was desolder the big connector off of a spare SBEC and ran the wires from the MS harness to that plug, and soldered them on to the appropriate pins. Makes it a pretty well plug and play deal. As for DIYAutotune, they tend to only sell generic MS's, not ones custom built to our application. You can buy a kit from them and assemble it yourself, which you might as well do because you'll be soldering on their pre-assembled unit quite a bit to add the second tach input circuit you'll need as well as the extra spark output circuits if you choose to go that route.

I guess the question becomes what to do if you have the oldstyle PM/LM setup. I know that I could easily plug into the LM side of things but all the injector power control is in the pM side of things. Any thoughts on the difficulty of setting it for this config??

As an aside, I don't think it would be too tough to do a custom PCB for the turbododge specific applications would it? I know that a custom PCB prototype can cost about 100-200 depending on complexity and size, but from what I've seen on the MS boards a lot of that space is eaten up in overly large thru-hole resistors. Be interesting to see how small we could make the control side of things.

Dang...got my brain turning again on this engine control stuff

[UnaClocker]

Just do like I did on my Omni, remove ALL of the factory underhood engine wiring. Install the MegaSquirt harness in it's place. The factory wiring is old and brittle and corroded anyways.
You may or may not have seen my blog:
Dodge Omni - 2.4L Swap
I go into a fair bit of detail on the wiring side of things.

[Matt Cramer]

Quote:

Originally Posted by cawcislo Could someone explain this whole Megasquirt system to me and what's involved. Being able to make changes on the fly sounds excellent.

The Megasquirt is a standalone engine management system that is available in a build it yourself kit form as well as ready made. It allows you to tune your spark curve, fueling, and more items. The setup UnaClocker has been talking about is a version of the MS2/Extra code. You can see what the feature list is on that one here:

MS2/Extra - General Docs

Note that not all the features are available at the same time or necessarily installed in preassembled units. If you are buying one ready made and do not want to add features yourself, be sure to talk things over with whoever you are buying it from, whether it's us or UnaClocker.

Quote:

What do I need to buy to make this work on an 87 T2 LM. How much is the megasquirt computer? Does it replace the T2 LM in the car? How much wiring do you have to do? I'd like to try this as I can't seem to get a good 3 bar cal for my car. Plus burning chips is a pain rather than a quick change to a program. Thanks.

The pricing depends on whether you are buying it in kit form or ready made; if you bought a solder it yourself kit from us along with wiring, diagnostic hardware, etc, you'd probably be spending around $400. We do offer custom built versions, although right now we haven't tested the setup for the stock turbo distributor out for ourselves.

Quote:

As an aside, I don't think it would be too tough to do a custom PCB for the turbododge specific applications would it? I know that a custom PCB prototype can cost about 100-200 depending on complexity and size, but from what I've seen on the MS boards a lot of that space is eaten up in overly large thru-hole resistors. Be interesting to see how small we could make the control side of things.

There's a fair number of model specific adapter boards out there - we use an adapter board inside our MSPNP line, and there are build it yourself adapter boards for Fords, BMWs, and a couple others that would let you take a standard Megasquirt and plug it into the factory wiring. While the Megasquirt's firmware is open source, the hardware is not, so you would need to contact Bowling & Grippo if you wanted to make your own version of the main board.

[Shadow24V]

I was going to say, i was pretty sure the board schematic was IP of B&G. IIRC the 3.57 board was a SMD for things like the ICs and such. doesnt that reduce the footprint of components on the PCB?