Gauging interest for PnP Megasquirt solution, MS anyone? Options

[JamesM]

For my most recent Megasquirt install i went a different route and had some mini-MS boards produced. It did not make a lot of sense to just have one PCB printed so needless to say i have more then a few empty boards laying around. Now i am trying to decide if it is worth my time and money to build these boards out and sell them as a plug n play solution for d-jet cars.

For those who don't know, mini-ms is electronically compatible with megasquirt 2.2 however the components are arranged tighter on the board and it integrates the relay board all on a form factor smaller then the original MS. My first couple of installs i used a standard megasquirt 2.2 with relay board and DB-37 cable but the mini-ms seemed like the better way to go so that is what i am playing with now.

The setup i a running right now looks almost stock, the mini-ms is enclosed completely in a gutted d-jet brain and plugs directly into the d-jet harness. the only difference from stock is a MAP line running to the brain and the 2 injector ground wires being run back as well. You have to look close to tell its not stock, however i have a feeling i could make it even more stealth by hiding the MAP sensor in an old MPS in order to get rid of the vac line to the ECU. I just have not cared enough to cut up an MPS yet.

The great part about this system is it makes troubleshooting way easier and eliminates the need for stock trigger points, MPS. ECU, decell valve, and cold start injector, though they can all be left in place if desired in order to appear stock. It also allows for cool things if you desire like closed loop operation with a wideband O2 sensor, spark control, rev limiters, traction control, and a bunch of other stuff depending on how far you want to take it. It can be tuned around just about anything, so its great if you want to change cams or go bigger on your motor and still look stock.

So is there any interest out there for this sort of thing or should i just dump the empty boards on ebay or something?

[charliew]

A base map is just that. It won't be as good as it should be. It may not run as good as stock. It might run better but probably not in my opinion but I'll let James speak to that.

[JamesM]

A base map is just that. It won't be as good as it should be. It may not run as good as stock. It might run better but probably not in my opinion but I'll let James speak to that.

Well, I can tell you that the map I have on my car runs better then the d-jet did for sure. My d-jet was not perfect though and the map that is on my car was made for my car so hardly qualifies as base in that case.
I did however use it as a base when we installed a system in rsrguy's car. Despite the fact that neither one of our motors was exactly stock and in completely different ways, once the wiring was sorted (the PO really jacked this car up wiring wise) it fired right up, drove around the block, and was running a lot better then the progressive carb we pulled off of it.

To put it in a little better perspective, my motor is a 2.0 with hydro lifters, stock 2.0 intake, and euro race headers. His motor is a 2.0 with unknown internals, stock 2.0 exhaust, and for the intake we hacked up a 2.0 bus FI manifold to fit his heads, and used 1.7 injectors. The ONLY thing i changed map wise was to scale the reqFule value for the smaller injectors. Totally drivable from the second it fired. It was running a little rich though i attribute that to either the flow difference caused by the different intake/exhaust, or me not scaling the injector flow rates perfectly. Either way, it led me to be pretty confident that a map from one stock 2L would be perfectly drivable on another stock 2L because that case would be even closer then what i had already done.

...and yes, i do have both a stock 2.0 and 1.7. I will use those rather then my autox car for building the base maps.