Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

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Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Tue Feb 15, 2011 3:56 pm

Hello everyone!

Here's my project and I can call it a success :


The car :

1991 Toyota Celica GT-S with a 4th gen 3SGTE engine swap from a 1997-2002 Caldina GT-T


The engine :

4 cylinders, 2.0L, turbo, COP with built-in igniters, high-impedance 540cc/min injectors, 36-2 crank trigger wheel, a trigger arm on the intake camshaft, crank and cam sensors are both VR sensors, OEM (Toyota) CLT and MAP sensor, RIAT IAT sensor mounted in the stock location (intake manifold plenum), AEM UEGO gauge and wideband, 3-wire OEM PWM idle valve.


The brain :

Hardware : v3.57 main board + MS3 + MS3X
Software : MS3 v1.1.2
Tuning : TunerStudio Beta v2.05d
Datalogging : Megalogviewer v3.1.0


The history :

Previously, this engine was running nicely with a MS2 v3.0 using a EDIS ignition system (36-1 crank trigger wheel, Ford VR sensor, EDIS coilpack, EDIS module, custom spark plug wires). In 2009-2010 winter, I decided to convert it to stock wiring, stock ECU, stock sensors, stock everything (when I did the swap initially, I bought the engine without any ECU and a cut wiring harness, so I went MS2 at the first time. I sourced all the OEM missing parts right after the swap). In 2010 spring, the engine ran nicely on the stock ECU, but, I felt like I needed some more way to fine tune the engine for more power. While I was doing the conversion to the stock ECU, I tried to go full sequential and I added a bunch of board modifications and add-on boards to the MS2 and it resulted in a fried MS2 chip. I discovered that my DIY electronics skills are limited. I learned that I should let the pros do their job and pay for it. So, I bought a brand new complete MS3 unit from DIYautotune in 2010 summer. I did an adapter harness to be able to switch from the stock ECU to the MS3 unit by only disconnecting 4 ECU plugs. I used a 31/24/22/28 receptacle, a female solder cup DB37 connector and a male solder cup DB37 connector.


What I was able to do with the MS3+MS3X :

-full sequential fuel injection
-full sequential ignition timing (COP)
-tacho output
-launch control
-closed-loop EGO control
-closed-loop idle control
-closed-loop boost control


What is on the to-do list for 2011 :

-enable fan control
-enable the stock in-dash Check Engine warning light as a shift light with the spare outputs
-instead of using the clutch start switch for launch control (clutch pedal needs to be fully depressed), I'll use the cruise control clutch switch (clutch pedal needs to be depressed only a little bit). Then, enable flafshift.
-because I'm using the OEM MAP sensor as my main MAP reading, I can now enable barometric compensation using the on-board MAP sensor.
-enable VSS by taping into the cruise control speed sensor wire.
-fine-tune EAE
-fine-tune injection timing
-fine-tune boost control PID
-fine-tune idle PID

What is on the to-do list for 2012 :

-fine-tune injection timing
-fine-tune boost control PID
-Try using the SD card (need to find a SD card reader for my laptop)
-Try to remove that annoying Loss of Sync reason #2 when the engine is cold and I'm around 1900-2000 RPM. Maybe playing with the VR pots.

I've joined a schematic drawing of my adapter harness and my latest .msq file.

Feel free to make any comments or ask any questions!

Sam
Last edited by pit_celica on Mon Aug 27, 2012 2:11 pm, edited 3 times in total.
pit_celica
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby MWPau » Thu Mar 03, 2011 6:38 pm

Im doing a 5S-GTE build at the moment using a 5S bottom end and ST215 head, so these will come in very handy for me, thanks :)
Toyota Celica GT4/Alltrac with 5S-GTE stroker (2.2L I4 turbo, high CR) on E85 w/FlexFuel.
MS3 + MS3X + KnockBoard + RTC + BT + DIY CAN-IO-Board + DIY CAN Digital Dash.
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby gringo » Sat Aug 13, 2011 6:59 pm

nice work !!!!
i have as well a 1998 toyta caldina gt t and im planing to put a megasquirt II do you have any other info i might need to install my mega that you can share ?

regards
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Wed Aug 17, 2011 7:13 am

Hi,

Seriously, all the needed info is right there in the first post. If you need help while installing your MS setup, send me a PM and it will be a pleasure for me to help you!

Sam
pit_celica
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Wed Sep 14, 2011 5:58 pm

Hi,

Here are the numbers from the dyno session I did earlier this week.

Image

Notes on the dyno plot :

This run was done at 16 PSI, AFR were at 11.8:1 and the gas was 91 octane.
Some high-RPM ignition problem forced us to stop the runs at 6400 RPM. Even gapping the BKR6EGP plugs down to 0.028" didn't cure the problem. I will install some BKR7E and see if the problem goes away. Anyway, at this boost level, it was time to upgrade the heat range of the spark plugs.

The 2 dips in the torque curve at 4000 and 4500 RPM are due to boost control oscillation (from 17.3 PSI to 15.1 PSI to 16.8 PSI). After that, boost is steady at 15.8-16.2 PSI. I still need to perfect the PID settings of the CL boost control :

Image

Do not care about the "Flywheel Torque" and "Flywheel Power" on the dyno plot. The numbers are really at the wheels.
To me, the most interesting aspect of this tuning session is that I came in with 250 whp and came out with 290 whp.

I'm pretty happy with the results!

Sam
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby ArkanimusGTI » Wed Oct 19, 2011 11:08 am

i have seen in the msq file that your Tooth #1 Angle (deg BTDC) is about 575... is that right?

Caldina engine has a 36-2 crank wheel but in other posts i see that the tooth #1 angle is about 95 degrees. what is the difference?

good numbers in the dyno session.

Regards,

Daniel
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Wed Oct 19, 2011 2:40 pm

This thread is explaining it quite good :

viewtopic.php?f=91&t=34799&start=20

Look at this thread too, you will see the composite log :

viewtopic.php?f=131&t=37217

By looking at the trigger wheel, we used 215° at first try but it was 360° off. So, I simply added 360° and I ended up at 575°. Basically, this is because of the location of the cam angle tooth vs the #1 cylinder TDC. I needed to add 360° so that the cam event happen at the right place.

Seriously, with this tooth#1 angle at 575°, the timing is dead on when verified with a timing light. I highly suggest you to use this setting.

Sam
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby arnen87 » Fri Aug 03, 2012 11:25 am

Very nice project, Sam! :)

Can you please explain me about the wiring? What adapter is that one that you have posted the diagram for?

I am going to MS a Celica gt4(alltrack) with caldina 98 engine, extreme modded! ;) built to run 35 psi of boost.

I am pretty new to all this wiring and connecting sensors etc.
But I have mapped/tune a few turbo'ed cars before..

Arne Inge
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Sat Aug 04, 2012 5:41 am

I've built this adapter and it look like this one :

http://www.tweakdperformance.com/online ... 85%202.jpg

I've used this female receptacle : http://tuner-deals.com/ecu-connectors-p-61.html

And I've used a female and a male DB37 connector for the MS3/MS3X connection. I think I have about 18" of wiring.

I'm really interested in your build. Do you have any built thread or something I can look at?

Sam
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby MWPau » Thu Dec 13, 2012 8:30 pm

Did you do anything special between the MS3X spark out and the COPs?
Ive heard of some guys blowing COPs if the signal is not correct.
Toyota Celica GT4/Alltrac with 5S-GTE stroker (2.2L I4 turbo, high CR) on E85 w/FlexFuel.
MS3 + MS3X + KnockBoard + RTC + BT + DIY CAN-IO-Board + DIY CAN Digital Dash.
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Fri Dec 14, 2012 5:32 am

No. I simply run a wire from the Spark output of the MS3X to the pin #3 of each COP. Take a look at my diagram in the first post for more info about wiring.

Sam
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby coyoteboy » Sun Jan 12, 2014 6:35 pm

Hi can you confirm which tacho out circuit/voltage you found compatible with the 91 dash?
Ta
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby pit_celica » Sun Jan 12, 2014 6:47 pm

I used the third one in this section :

http://www.msextra.com/doc/ms2extra/MS2 ... m#tachoout

The one named "Hi-voltage Tacho-Out" with the relay coil. I gutted a standard automotive Bosch relay and it worked like a charm. Make sure you remove the the small contact arm inside the relay. If you don't, you will hear the relay clicking each time the tach output trigger (really annoying).

Sam
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Re: Toyota ST215 Caldina engine : 3SGTE on MS3+MS3X

Postby mistermike » Wed Dec 30, 2015 8:13 am

Hey

Please assist with some wring or pin out diagrams for your adapter harness from stock to ms3 ecu. Need to do similar mod for my similar setup
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