megasquirt

hi all any 1 had any experiance with megasquirts ecu and a 2.9 v6 t/t sierra

Hi, yeah a mate of mine run a Turbo Technics Twin Turbo on Megaquirt. However there are others on this forum that have experience with the ECU.

Rob

Pinouts for Megasquirt in Sierra 2.9i

PIP & SPOUT is for the ignition.

PIP (MS24) is the signal that goes to TFI Ignition module pin 6
SPOUT (MS36) is the trigger that goes to TFI Ignition module pin 5

Orginal Contact -> MS Contact

Pin 25 (Brown/yellowl) -> MS20 (Air temp)
Pin 7 (Brown/Green) -> MS21 (Coolant temp)
Pin 47 (Brown/Green) -> MS22 (TPS signal)
Pin 29 (Brown/yellow) -> MS23 (Lambda)
Pin 56 (Blue/yellow) -> MS24 (PIP)
Pin 26 (Brown/black) -> MS26 (TPS Vref)
Pin 37 (black) -> MS28 (+12v)
Pin 57 (black) -> MS28 (+12v)
Pin 21 (Brown/yellow) -> MS30 (Fidle Solonoid)
Pin 22 (Blue/Red) -> MS37 (Fuelpump relay)
Pin 58 (Brown) -> MS32-MS33 (Injectors)
Pin 59 (Brown) -> MS34-MS35 (Injectors)
Pin 36 (Blue/red) -> MS36 (SPOUT)
Pin 16 (Brown) -> Earth
Pin 40 (Brown) -> Earth
Pin 46 (Brown) -> Earth
Pin 60 (Brown) -> Earth

Put the two black together and draw a smaller wire to MS28
Put the earth wires together and draw two smaller wire to MS8-9 & MS10-11

ah great i got it i think so i think its the 2 middle wires are the black they want to be ign live pin 24 goes to the first on the left and then the pin 36 next to that then a wire to my coil and then the last 1 goes to earth
think thats right

Im sorry but i have a hard time understanding what you mean.

The pinouts i am listing is for TFI ignition only, you can skip and use the megasquirt to fire a ignition coil but the Megasquirt must have been prepered ford TFI so it can handle the PIP signal

ah i c well i have using this link for a rough idea heres the link have a look see what u think there are 2 wiring diagrams on there

http://www.diyautotune.com/tech_articles/how_to_megasquirt_your_ford_mustang_5_0.htm

The question is if you have modified your MS for TFI igntion? If you have done it you can just use my pinouts, it´s extremely simple.

It´s possible to fire a ignition coil directly from pin 36 but you must put i the right dwell numbers or else you will burn your MS

no i havent i got it from diyautotune they built it and sent it to me

Ok, you can just ordet it with TFI then if you want to take an easy way, i have tested my Capri with just using the Hall-sensor in the distributor to trigger the MS directly and it works. But it´s required to modife the triggerwheel in the distributor (weld the fourth teeth)

i c ok and thats all u do then i can run the pin set up you have

I have a wery hard time to understand when you shorten the words like that. Remember that we don´t have english as our native language

sorry i forget you do speak english very well

hi Mikael hows things all good here just wondering i have my tfi module plug and the wires are starting from the top,

blue and yellow
blue and red
green and black
black
green
blue and black

just wondeing which way round they are the 2 middle ones are both live but which is the earth and which is the ecu

many thanks rich

If you look at mi pinouts you will see the coolers, here is a pic on the TFI module



Uncertain with the , green/black and the blue/black

blue and yellow = PIP
blue and red = SPOUT
green and black = 12v when running on the starter i think
black = 12v switched
green = Ignition coil
blue and black =


I always use the orginal harness so i haven´t thougt about how the TFI module connects

ok great so the
blue and yellow wants to go to pin 24
the red and blue goes to pin 36
the green and black and the black go to live
the green goes to coil
and the blue goes to earth

im unsure if the blue/black goes to earth, it should been a brown.

What is Live?

live is 12v and there is no brown on the tfi plug

Ok. It´s the blue/black thats is uncertain then

ok ive just sentt a small diagram of my tfi wiring thats if i sent it to the right place

It seems right, but you need to chech with a wiring diagram to see where the blue/black goes, the green/black is not required if i remember right

hay there hows things well ive got it all done ecu powered up and fuel pump kicking in i even have spark the only problem i have is my injectors are not pulsing any ideas

thx rich

Strange

The injectors are grounded by the Megasquirt. do you have 12+ to the injector contakts when you turn on the ignition?

yes i do i have them on my ignition

Thats strange. Check the cables that goes from the injector contacts to the Megasquirt Contact, check so they don´t are grounden when you remove the Megasquirt box

Here you have my 2.9 mapp made for TFI, big turbo and 350cc injectors, it has lowered ignition to be safe

http://skogenracing.myftp.org/forum/Megasquirt/Mappar/Startmapp_TFI_6cyl_350cc.msq

thank you for the mapp it will help alot it sounds perfect im running 480cc injectors but with t25 turbos x2 so should do the job

is there a simple way of installing the map or do i have to imput it bit by bit