installing a megasquirt on a 420a

[newtypeeclipse]

ok i have done some research on this, but what i am looking for is does anyone have in information on how to install a megasquirt on a 420a, like wiring dirgram and ecu pinouts and stuff like this

 

[DRAGIN]

You'd probably have to buy a factory service manual. It's definately worth the investment.

 

[ImportWarrior]

if you have a link to a 420 ecu pin out i can help you.
how is your megasquirt set up. dual wheel?

 

[Ajax]

Heres a link to a 95 pinout http://www.2gnt.com/www/corbin/95ECU.html Not sure if its the same as the 97 cant remember where I got mine from. Heres one for the normal 420a mS http://www.rs-autosport.net/catalog/docs/RSA_v3-wiring_420a.gif

 

[newtypeeclipse]

cool guys thanks, im not sure how it is set up, i just ordered off ebay already put together for 300 bucks, includes every thing even some sensors, i do know its v3 and it has the simultar board as well

 

[newtypeeclipse]

Heres a link to a 95 pinout http://www.2gnt.com/www/corbin/95ECU.html Not sure if its the same as the 97 cant remember where I got mine from. Heres one for the normal 420a mS http://www.rs-autosport.net/catalog/docs/RSA_v3-wiring_420a.gif

see im lost at that dirgram, i thought we have 2 plugs on are ecu, so that dirgram only shows one.

 

[Locke]

ECU pinouts changed every year for the 420a.

Use this to help install your MS. 2GNT.com - MSnS_INSTALL_(parts/wiring_only!)

 

[newtypeeclipse]

see that doesnt really have a pin out

 

[Locke]

You shouldn't need a pinout to install MS.

But here it is for your 97: 2GNT.com - 1997_ECU

 

[Ajax]

Yeah Locke that the one I used and was looking for. For some reason I could not find it under my favorites!

 

[newtypeeclipse]

You shouldn't need a pinout to install MS.

But here it is for your 97: 2GNT.com - 1997_ECU

so do i leave my old ecu in its spot, and just cut and splis the wires after or something?

 

[ivatu]

hey sorry if im changing the subject but what can a megasquirt can do for a 420a n/t?
also can this fit the 95 eclipse?

 

[newtypeeclipse]

i dont know honestly, i would think the factory ecu would still work for a n/t,

 

[99RedGs]

Megasquirt is a stand alone. Meaning it runs seperate from the ECU so I don't understand why you need to mess with pinouts and such. Since you probably will still use the ECU to control some accessories you only need to unplug the wires you aren't using.

Maybe I'm wrong though haven't installed on a 420a yet.

hey sorry if im changing the subject but what can a megasquirt can do for a 420a n/t?
also can this fit the 95 eclipse?

You could probably use MsnS and maybe get a little better gas mileage. If you were running 12:1 comp and cam's it would probably be beneficial / necessary for you to have it.

 

[Locke]

Bullett says MS is one of the best things he has done to his NA, and if I recall correctly, says it ought to be one of the first as well. The gains were that significant.

 

[newtypeeclipse]

ok so if i go this right all i have to do is cut the wires going to the ecu (only the ones i need like what hooks up to the megasquirt) and run the harness that way. and leave the ecu where it is right

 

[Ajax]

Thats correct Leave the ECU were its at and splice the wires after the plug. There are certain wires you splice and certain ones you cut. You can cut them all but then you will loose tach etc. But coil and injectors you cut bc you dont want the stock ECU to mess with them.

 

[newtypeeclipse]

ok i have to v3 board, and i was looking at the ecu and the wiring harness for the megasquirt and there is only one wire labeled ing and i have to wires going to my coils, its a grey wire off the megasquirt harness, so do i cut both coil wires and jsut wire them to the ing wire?

 

[newtypeeclipse]

and what is pin 36 for, it says ingtion mudule/coil?

 

[ImportWarrior]

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[newtypeeclipse]

ok im lost, the shielding ok explain, and as for the fast idle where is that at? and as for the iac i have 4 wires that are labeled iac pin 1 pin 2 pin 3 pin 4, and on the megasquirt its iac a and iac b? and what is the wire pin 36 for? and what do i do so the megasquirt control spark what wire is that? and the, some one please explain im really lost on this, other than that its hooked up

 

[Ajax]

You cannot use the stock IAC with the MS1 for the 420a. Neither fast idle. Only with the MS2 Unless you install a bosch style IAC. That is the trickest part to tune. Is getting your car to idle with no idle control esp. cold start and warm-up.

 

[newtypeeclipse]

You cannot use the stock IAC with the MS1 for the 420a. Neither fast idle. Only with the MS2 Unless you install a bosch style IAC. That is the trickest part to tune. Is getting your car to idle with no idle control esp. cold start and warm-up.

ok i have ms2 pcb v3 not ms1 if you would of read, if your not going to answer my question stop posting, all you are doing is confusing me more and more.

 

[newtypeeclipse]

ok so i did some more research and i have come to this understanding, pin 24 on the megasquirt i connect that to my tach signal wire from the ecu.

 

[newtypeeclipse]

so where does pin 36 connect to? does a 420a even have a fidle? and if so where is it