Anything I\'ve missed
Turbo Mini Forums

My MS was originally built for a Ford using edis.

I've added the 4 channel driver board from Jean, added 2 ignition drivers to run coil pack and the 4 injector drivers, removed the unused components from the V3 board.

Tip122 added to drive PWM for idle

Modded the MS2 chip as per Jeans website instructions and added the following for cam sensor

XG1 > SPR1
5v > 1k > Leg 1 U3

I built the jimstim last night, just need to flash the MS2 and connect up the stim to the d15 on the driver board, is this a case of ign out on the d15 to pins 1-6 on the 10 pin header

I would also add a second O2 sensor circuit so that can be logged.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Ah yeh, I'd forgot that bit

I plan to follow the link below but using SPR2 instead of SPR1 as I've used that for the Cam sensor

http://www.diyautotune.com/tech_articles/c...Second_o2_MS2v3

Yes that's right.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I meant injectors and both coil drivers

I'm not quite sure what you mean by "......and connect up the stim to the d15 on the driver board, is this a case of ign out on the d15 to pins 1-6 on the 10 pin header" ????

If you mean the 10 pin header on the JimStim that connects to the 6 red and 2 bi-coloured LEDs, and the DB15 connector on the 4 channel board, then yes - if you want the leds on the JimStim to flash on ignition events. But bear in mind because you will have modified the MS2 mainboard to take the wasted spark ignition events from LEDs D14 and D16, once you enter the correct settings in the Extra code to enable the coilpack, those two LEDs will flash for ignition anyway.

What you need to bear in mind is that, once you use the 4 channel board and (correctly) remove the existing Injector circuitry from the mainboard, the Injector LEDs will NOT flash on the JimStim so if you want to watch Injection events on the JimStim LEDs you need to connect the relevant pins from the DB15 to the JimStim header.

Otherwise, all I would suggest is to check very carefully how you have wired in the 4 channel board (as it is done in a very different manner for sequential (staged in our case)) and unplug the daughterboard before powering up the JimStim/MS2 and do a voltage check at the 40 pin socket. The instrctions are in the MS3 (three) build manual (it hasn't been added to the MS2 manual yet) but I've read of one person who fried their daughterboard by mis-interpretting the instructions for the 4 channel modification.

EDIT - Paul beat me to it, I type too slowly......

Edited by Rod S on 20th May, 2011.

Schrödinger's cat - so which one am I ???

"If you mean the 10 pin header on the JimStim that connects to the 6 red and 2 bi-coloured LEDs, and the DB15 connector on the 4 channel board, then yes - if you want the leds on the JimStim to flash on ignition events. But bear in mind because you will have modified the MS2 mainboard to take the wasted spark ignition events from LEDs D14 and D16, once you enter the correct settings in the Extra code to enable the coilpack, those two LEDs will flash for ignition anyway."

Excellent

"Otherwise, all I would suggest is to check very carefully how you have wired in the 4 channel board (as it is done in a very different manner for sequential (staged in our case)) and unplug the daughterboard before powering up the JimStim/MS2 and do a voltage check at the 40 pin socket. The instrctions are in the MS3 (three) build manual (it hasn't been added to the MS2 manual yet) but I've read of one person who fried their daughterboard by mis-interpretting the instructions for the 4 channel modification."

I followed these intrustions on Jeans site to connect the 4 channel board

http://www.jbperf.com/sequential/index.html#v3conn

That is the correect set of instructions (there is another set for doing it in non-sequential mode which involves the wires going different places and, if not followed exactly, can end up with 12V on the CPU).

I think the voltage check is well worthwhile though - anything can happen when modifying the boards, like an accidental un-noticed solder bridge onto one of the 12V tracks or pads.

Schrödinger's cat - so which one am I ???

One final point,

When you go to load the code, if the CPU has never had a version of the EXTRA code on it before, it has to be loaded in two stages the first time (fortunately the first time only) involving use of the bootload jumper on the daughterboard.

Once the change to the EXTRA code has been made, future upgrades don't require the jumper.

Edited by Rod S on 20th May, 2011.

Schrödinger's cat - so which one am I ???

Do i just use the latest code for ms2?

Sorry for all the questions

Schrödinger's cat - so which one am I ???

Sorry I meant the latest extra code, trying to type too quickly with the boss nearby :)

Thanks for all the help

Edited by Ratty on 20th May, 2011.

Then it's up to you - I'm still on a 3.0.something, I haven't bothered going to 3.1.0.

If you are 3.anything personally I would check everything else works before upgrading.

The other thing, if you weren't already aware, you will need TunerStudio or MegaTunix to access the complete menus for siamese/sequential - the original Megatune cannot handle the extended menus.

Schrödinger's cat - so which one am I ???

You will also need to connect OptoOut to JS10.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Got that, missed it on first post

Well it works, 4 flashing injector lights, 2 coil lights, just need a engine to test it on now :)

Can I confirm if the ground for the second O2 circuit goes to proto ground

http://www.diyautotune.com/tech_articles/c...Second_o2_MS2v3

Yes, use the proto area ground.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Cheers, ecu now finished, all sensors are here and tested to be working.

A spare 850 engine has fired up on a carb.

Mpi manifold has arrived so providing the Mrs let me play this weekend I might get the chance to test it all out :)