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?

[Jake Raby]

PNP really doesn't exist...
Too many variables in operating conditions, fuel grade and fuel specifics and even differences in stock engines.

Tuning and fiddling will always be necessary.

[904svo]

PNP really doesn't exist...
Too many variables in operating conditions, fuel grade and fuel specifics and even differences in stock engines.

Tuning and fiddling will always be necessary.

I will agree with Jake, I am trying to install MS1 on a 1.7 ltr test engine. Tuning
and fiddling with it all the time I just can't get MS to hold a tune for me the VE
tables and timing tables have to be changed ever time I run the engine.

[JamesM]

PNP really doesn't exist...
Too many variables in operating conditions, fuel grade and fuel specifics and even differences in stock engines.

Tuning and fiddling will always be necessary.

I will agree with Jake, I am trying to install MS1 on a 1.7 ltr test engine. Tuning
and fiddling with it all the time I just can't get MS to hold a tune for me the VE
tables and timing tables have to be changed ever time I run the engine.

That is strange, I have not had that issue with my cars. could you give me more details on your setup?

[904svo]

PNP really doesn't exist...
Too many variables in operating conditions, fuel grade and fuel specifics and even differences in stock engines.

Tuning and fiddling will always be necessary.

I will agree with Jake, I am trying to install MS1 on a 1.7 ltr test engine. Tuning
and fiddling with it all the time I just can't get MS to hold a tune for me the VE
tables and timing tables have to be changed ever time I run the engine.

That is strange, I have not had that issue with my cars. could you give me more details on your setup?

I,m running MS1 extra with wasted spark (VW Coil packs), Honda 900CBR throttle body's, 36-1 tooth wheel , added extra map sensor for barometer correction and O2 sensor.Here a picture of my setup.

[JamesM]

PNP really doesn't exist...
Too many variables in operating conditions, fuel grade and fuel specifics and even differences in stock engines.

Tuning and fiddling will always be necessary.

I will agree with Jake, I am trying to install MS1 on a 1.7 ltr test engine. Tuning
and fiddling with it all the time I just can't get MS to hold a tune for me the VE
tables and timing tables have to be changed ever time I run the engine.

That is strange, I have not had that issue with my cars. could you give me more details on your setup?

I,m running MS1 extra with wasted spark (VW Coil packs), Honda 900CBR throttle body's, 36-1 tooth wheel , added extra map sensor for barometer correction and O2 sensor.Here a picture of my setup.

That is a pretty intense looking setup you have there. What do you mean by changed every time you run your engine? is the MS just not holding the data or is your engine wanting different values every time you run it?
Having to change your timing around every time you start the motor is pretty scary. I have not run a 36-1 wheel so i am not familiar with the settings involved with it but i would go over them again very carefully.

Changing the timing is going to affect what fuel the motor wants so the two issues could be related... or not. I have heard of people having a hard time tuning ITB setups using speed density due to the vacuum characteristics, so that could be an issue as well. Where are you pulling your MAP signal from? Where is your IAT sensor located? You have a lot of variables there that makes troubleshooting a bit more complicated. This is one of the reason i try to keep it as simple as possible,

If you could, i would go back to a stock dizzy setup just to make sure you can get it to fuel correctly with the intake setup you have. Hopefully narrow down where your problem is coming from.