HOW TO - Control boost using ECUFLash and 3 port GM boost solenoid

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Oct 7, 2007 | 11:04 AM

#196

cij911

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From: Socal :)

OK I have no idea what was going on with the flash, but I think there was a lean spool issue...Net / net, I went back to one of my earlier flashes, and used the same settings and actually was over-boosting with MWGDC @75....I then changed to the MWGDC shown in Bryan's post and am back at the ~15 psi in the higher ranges (it does not appear that my ecu is adding WGDC per the error table )...

I then zeroed out my TBEC and still am not seeing my target load and my WGDC are below the MWGDC baseline. Shouldn't the system be using the WGDC entries to hit load (e.g. @4K rpm my WGDC is 40, yet in the table it is 52, and my load is 205 vs target 248.)

Could others that are using this setup trying to have a peak of ~22lbs and holding to ~20 at redline post their MWGDC settings? Thanks

Last edited by cij911; Oct 8, 2007 at 08:16 AM. Reason: Updated info

Oct 10, 2007 | 09:13 AM

#197

cij911

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From: Socal :)

OK well I have an extremely flat boost curve right now (may have a tad too much boost at redline) -- peak is ~21 @ 3500 and I am holding 19.X @ 7500, but have some questions to engineers that have been looking at the code. I am interested in understanding the MWGDC translation as it appears to not be spot on.

I have the TBEC zero'd out and my target loads are very close to perfect.

I need to have my MWGDC much higher than actual in order to achieve the desired results, e.g. @ 4K I need to set MWGDC to 64 in order to see ~49/50 in reality (even though my TBEC is zero'd). Any idea why this is so?

Also, I don't seem to be overboosting and my boost is extremely accurate in all gears, should I just leave the TBEC zero'd?

Once I get this finalized, I will be finishing my Meth. installation and the boost curves will be bumped up a tad

Oct 10, 2007 | 10:29 AM

#198

mrfred

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From: Tri-Cities, WA // Portland, OR

Quote:

Originally Posted by cij911

...

I need to have my MWGDC much higher than actual in order to achieve the desired results, e.g. @ 4K I need to set MWGDC to 64 in order to see ~49/50 in reality (even though my TBEC is zero'd). Any idea why this is so?

....

Can you post a screen shot of your TBEC table, MWGDC tables, and a log?

Oct 12, 2007 | 04:09 PM

#199

Max Power

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From: Chandler, AZ

Has anyone run the compressor source from the UICP instead of the LICP/compressor housing? What do you think the difference will be (pre vs post intercooler)?

Oct 12, 2007 | 10:07 PM

#200

cij911

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From: Socal :)

Quote:

Originally Posted by Max Power

Has anyone run the compressor source from the UICP instead of the LICP/compressor housing? What do you think the difference will be (pre vs post intercooler)?

Why would you need to do this if you are running MAF ? I am assuming you are concerned with a pressure drop post FMIC?

Oct 13, 2007 | 01:17 PM

#201

Max Power

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From: Chandler, AZ

Ease of location - with the vertical flow IC, the LICP is buried underneath the front. I'm just wondering if having the source for the solenoid coming post IC will cause any problems. I wouldn't think so but, I figured I'd ask the pro's.

Oct 16, 2007 | 04:22 PM

#202

merkzu

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From: Twin Cities, MN

I hooked up the GM solenoid today. I zerod out my TBEC table, and set the Max WGDC tables all to 50. Eased into boost, and hit 30psi. I lowered the Max WGDC tables to all 10, and hit 29psi. This time I logged WGDC in EvoScan. WGDC ramps up to 100, and then goes down to 10 right at about 4000rpm. But of course I have already hit peak boost at that point..

In EcuFlash my Wastegate Solenoid Activation and Deactivation tables don't work, they come up with just a "." where the table would be. I'm guessing the definitions I have for those tables are invalid, and my solenoid isnt set to activate until 4k rpm. Can anyone share the correct definitions for those tables for the 88590015 ROM?

Here is a spreadhseet of what I'm talking about:
http://spreadsheets.google.com/pub?k...8qSzcnXYJasqFw

edit - here is what my solenoid activate/deactivate xml section looks like:

Code:

	<table name="Max Wastegate Duty # 3" address="3f6a">
		<table name="RPM" address="722e" elements="16"/>
	</table>

	<table name="Wastegate Solenoid Activation RPM-Active" address="1668"/>

	<table name="Wastegate Solenoid Activation RPM-De-activate" address="166a"/>

	<table name="Wastegate Solenoid De-activation RPM-De-activate" address="166c"/>

	<table name="Wastegate Solenoid De-activation RPM-Re-activate" address="166e"/>

	<table name="Open Loop Load # 1" address="3060">
		<table name="RPM" address="6b98" elements="16"/>
	</table>

Last edited by merkzu; Oct 16, 2007 at 05:10 PM.

Oct 16, 2007 | 09:43 PM

#203

Evo_Jay

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From: Chico, CA (NOR-CAL)

Quote:

Originally Posted by merkzu

Code:

	<table name="Max Wastegate Duty # 3" address="3f6a">
		<table name="RPM" address="722e" elements="16"/>
	</table>

	<table name="Wastegate Solenoid Activation RPM-Active" address="1668"/>

	<table name="Wastegate Solenoid Activation RPM-De-activate" address="166a"/>

	<table name="Wastegate Solenoid De-activation RPM-De-activate" address="166c"/>

	<table name="Wastegate Solenoid De-activation RPM-Re-activate" address="166e"/>

	<table name="Open Loop Load # 1" address="3060">
		<table name="RPM" address="6b98" elements="16"/>
	</table>

seem like an install problem. or a broken solenoid.

Oct 17, 2007 | 08:25 AM

#204

merkzu

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From: Twin Cities, MN

Quote:

Originally Posted by Evo_Kid

seem like an install problem. or a broken solenoid.

Everything works fine after 4k rpm. This morning I waited until 4krpm and got into boost, WGDC of 10 and basically wastegate boost pressure. If I wait till after 4k rpm I can even floor it and boost stays right where I would think it should be for my WGDC settings, logged WGDC is spot on. Since the solenoid doesnt know anything about rpm I'm pretty sure its something in the ecu rom..

Oct 17, 2007 | 11:48 AM

#205

burgers22

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From: Oxfordshire

How sure are you the the definition file is Ok for your ROM? Do you have all the WGDC maps set the same? I am interested as I'm awaiting a GM 3 port, but getting one here in the UK is a pain in the butt.

MB

Oct 17, 2007 | 12:07 PM

#206

merkzu

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From: Twin Cities, MN

got it figured out, my solenoid activate (1668) value had 24000 in it when looked at with the right scaling, fixed that and it runs great. Got a rough baseline dialed in now, man the boost curve between this and my MBC is night and day. It holds 2psi more up top and way better in the midrange.. I still have 25psi at 6k!

Oct 17, 2007 | 06:21 PM

#207

Max Power

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From: Chandler, AZ

For anyone interested, you can pop out the female connectors from the factory solenoid plug by depressing the little plastic tabs with a small screw driver and pulling the wires out. I ordered a set of 0.110 red male connectors from here, http://www.wiringproducts.com/index1.html which I soldered onto the pigtail. Put them into the female tabs (durr) from the factory plug and put some electrical tape on there and voi lait - no cut, quick removing mod.

Only problem is I have 23 more male taps

Last edited by Max Power; Oct 17, 2007 at 06:29 PM.

Oct 25, 2007 | 08:17 PM

#208

subaruwrx420

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From: South Florida

Quote:

Originally Posted by merkzu

Code:

	<table name="Max Wastegate Duty # 3" address="3f6a">
		<table name="RPM" address="722e" elements="16"/>
	</table>

	<table name="Wastegate Solenoid Activation RPM-Active" address="1668"/>

	<table name="Wastegate Solenoid Activation RPM-De-activate" address="166a"/>

	<table name="Wastegate Solenoid De-activation RPM-De-activate" address="166c"/>

	<table name="Wastegate Solenoid De-activation RPM-Re-activate" address="166e"/>

	<table name="Open Loop Load # 1" address="3060">
		<table name="RPM" address="6b98" elements="16"/>
	</table>

Interesting, when I was trying to tune with the Perrin EBCS, basically the same as the GM but more expensive, I had the same problem. The car would just hit ~29psi no matter what the settings were.

I have since swapped it with a GM unit and am having the same results, the car just hits high boost if I floor it. I have not had time to tune it and have just been pu*sy footing the car.

I looked in this threat that you started: https://www.evolutionm.net/forums/sh...d.php?t=302027

Perhaps you can share what you set the table values to as a baseline. Right now I followed the instructions and have the table values the same as razorlab posted.

I have not logged since the change but any help is appreciated.

Thanks.

BTW, I have ROM 15 as well.

Oct 25, 2007 | 08:58 PM

#209

RazorLab

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From: Mid-Hudson, NY

Here is how to set the activation/de-activation defs correctly:

https://www.evolutionm.net/forums/sh...1&postcount=13

Nov 16, 2007 | 02:33 PM

#210

76kcfdeng

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From: Wofford Hts, CA

Plug in both ends!

OK, I am getting ready to do this. I am controlling boost with ECU and 65 Turbo pill. I am into stealth and hate cutting or tapping into stock wiring. I saw a post earlier that the opposite plug for the BCS is not available. Today I spent some time in the local Pick your Part looking for a solution. I found IT! I took the pressure sensor off the aircon line from a 90 Galant, any late model Mitsu should work. The 1 on our cars is the same. This has the same plug as the BCS. I used a hacksaw to remove the metal around the sensor and then removed the innards of the sensor. You then have to pry out and trim the contacts, solder on the pigtail and resistor. I will use some silicone or epoxy inside the area where the soldered contacts are, you will see that it is a void in the back of the plug. I also got the pigtail for the GM 3 port, they are common on gm cars. I will try to post pics later.
Glen

Pics added, more to come.

Resistor embedded in silicone.
IMG_1998.jpg?t=1195349408

IMG_1999.jpg?t=1195349473

Last edited by 76kcfdeng; Nov 17, 2007 at 05:33 PM.