I would like to pick up MSII w/ PCB3 for a 1990. I've read a lot on here and DIYautotune but would just like to know if its possible to wire it up without cutting into the factory harness. I heard something about some people using a connector from the stock ECU purchased from boomslang. With that can you make it PnP?

 

yup. look at braineack's recent thread posts to find the pics of the one he bought from me.

 

yep boomslang heaven:

 

It's not the purdiest thing ever, but then again he got my personal one :P The one Brad (should) be getting is MUCH prettier.

 

yeah his was a little nicer...I modded mine so I had to pull a few wires & "unpretty" it.

But technically....I plugged in the boomslang to the factory harness, plugged in the MS, plugged in the boost source and it cranked right up.

I need a new hobby, I'm considering making one or two for peeps...now that i've experienced it firsthand, i trust I could build it on my own....for a nomial fee of couse :gay:

 

Can you do one for a 2000?

 

I used a boomslang adapter to do mine so that I did not need to cut the stock ecu harness. I only bought a female adapter, cut the leads short, and soldered the wires to the correct leads.

 

Hey Braineak, what are the two different cases there in that picture? Looks like your running the stock ECU parallel with MS.

 

every one is running the MS with the stock ecu the PNP just keeps it all in the same box i believe. but i could be wrong his setup is essentialy PNP.

 

1 case = Mazda ECU
1 case = Mazda ABS controller

The MS in not pictured in that photo.

 

yep...when all is said and done it looks like this:

 

sorry mine sits where his abs is and looks about the same.

 

Yeah the ABS computer throws off those who dont have ABS.

I wish the ABS computer were somewhere else, it makes the MS install MUCH easier. I have mine in the glove box bolted to the back wall.

 

And here I was thinking I knew enough to get started and I didnt even know your supposed to use the stock ECU as well =/

 

you dont have to, but this it built so the stock ECU controls the idle valve, a/c, and fans...