Megasquirt FAQ, writeup (Updated 30/10/09)

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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby BNZ » Sun Jan 09, 2011 5:53 pm

finally i am able to controll a powerslide,not fearing to let go of the gas and putting it back :lol:
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby coyoteboy » Fri Jan 14, 2011 10:33 am

I've bored out the vent port on the stock VSV so it now can bleed 11psi. When I next get the car on the road i'll see if I can tune the boost control settings. I'll see if I can post up the results when I'm done.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby BNZ » Fri Jan 14, 2011 11:05 am

Was that necessary ? I'm currently bleeding up to 0.8 bar with it,stock shape
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby coyoteboy » Fri Jan 14, 2011 12:53 pm

Yep, measured a max (locked open) 4psi drop across mine. This concurs with the fact that the stock ECU just opens it to add the 4psi to the wastegate value, there's no PWM control of it. I would wonder how you're dropping .8 bar, and how you're measuring it. The 205 valve is more tightly controlled, the 185 is open/shut.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MXP_57 » Sat Jan 15, 2011 3:25 am

Hey guys,

I'm back from holidays. But i think the base map tw2 wasn't good a lot of setting were weird no way i could start on that. (Like the dwell vs battery V setting at 20% linear curve=not enough spark at all).
I"m getting a clean distributor signal now.

I think it was tw2 who sent it to me, but i'm not sure it was the right file.

Would there be anybody willing to send me their map. Any map that starts on the 3sgte. I will check all the settings etc...

If you could send me your msq file to: MXP.5700 at gmail.com it would be awesome... so i can get my beast started asap. :D

Thanks!
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby tw2 » Sat Jan 15, 2011 3:30 am

It is setup for EDIS. You will need to go through and change all your settings depending on your ignition system etc. It is just the fuel and ignition maps which you may want to adopt from it until you start tuning.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MXP_57 » Sat Jan 15, 2011 4:14 am

Ok, thanks.

So was it normal that the dwell vs battery voltage curve was 20% linear curve? because of the edis setup?
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby tw2 » Sat Jan 15, 2011 8:28 am

This is what you probably want to use.
http://www.msextra.com/doc/ms2extra/MS2-Extra_Gen_Ignition.htm#dwellbat
I cannot remember but I think the EDIS module controls dwell itself. The only 2 wires from MS to the edis ignition module are PIP which tells the ecu when TDC is and SAW which tells EDIS when to fire the ignition. It is a very simple system. It works without an ecu connected at all- it just reverts back to base 10 degree's timing. The manual says to set fixed dwell and does not go any further than this. I think a lot of this file was originally from pit_celica, maybe he can comment? All I know is that my car started perfectly first time and runs very well.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby tw2 » Sat Jan 15, 2011 8:44 am

Found it.
The EDIS module will automatically adjust dwell time to charge the coil primary up to the pre-determined current limit.

http://www.autosportlabs.net/Ford_EDIS_technical_information

The duration of the PIP signal is based on the desired coil dwell period, and is calculated internally by the EDIS module.

http://www.megamanual.com/ms2/EDIS.htm
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MXP_57 » Sat Jan 15, 2011 9:09 am

Ok, no worries.

So the fuel maps and ignition are good... I've modified all the rest.

I'll try tomorrow. Hopefully it will start... :P
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MXP_57 » Mon Jan 17, 2011 3:46 am

I still can't get a good trigger signal... seriously i'm starting to loose my nerve about this whole thing...
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MWP » Thu Jan 27, 2011 1:29 pm

Anyone running a 3S-GTE with a MS3 yet?
Im considering MS3 + MS3X + P&H drivers + LS1 coils for my 5S-GTE build.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MXP_57 » Thu Jan 27, 2011 2:01 pm

I don't know but it's quite expensive the MS3.

But everything is built in.


I finally got the car to work by removing G1 and G2 from inside the dizzy and ground 2 teeth off the Ne wheel.

It works perfectly, without any noise filtering!!!

Took me 1h to modify the dizzy and the ms2 to switch back to 1 VR.
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby MWP » Tue Feb 08, 2011 12:29 am

So MS3 + MS3X it is...

Ill be wanting coil per plug and sequential injection, so ill need a cam position sensor.

There is a chance i can swap my gen3 head for a gen4 (ST215) head with the single tooth cam position sensor.
Could the MS3 use this?

[edit]
Found the answer in the MS3 docs :)
Now to go order me a MS3 :D
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Re: Megasquirt FAQ, writeup (Updated 30/10/09)

Postby pit_celica » Mon Feb 14, 2011 2:37 am

Hi guys,

If you need any info about how to fit a MS3+MS3X onto a 3SGTE gen 4 ST215, I'm your guy. I'm currently running this setup. I'm using every stock sensors and actuators : TPS, MAP, CLT, MAT, knock sensor, crank angle sensor, cam angle sensor, IAC, stock COPs... everything. All that through the stock wiring harness so I can switch to the stock ECU in 30 seconds.

I'm using some other MS3X input/output to do the following :

-boost control using the DIYautotune solenoid
-tacho output driving my stock tachometer
-on-board MAP sensor as a barometer
-launch control using the cruise control clutch switch as the input
-Spare outputs to drive the radiator fan relay and the stock Check engine light (currently using it as a shift light)

I've joined a wiring diagram showing how my adapter harness (MS3/MS3X to stock harness adapter) is built.

Seriously, you can't go wrong with MS3+MS3X.

If you have any questions, just ask!

Sam
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