So who wants their ECU's "Chromed"?

[Greg E]

This thread is now outdated!! New threads here:

http://www.3sgto.org/f104/how-tune-y...ecu-10775.html
http://www.3sgto.org/f104/chrome-v2-...ual-10777.html





I finally got the first stage of my "Chromed" (patched) ROM mods figured out & my custom EVOScan file is completed & tested. This has been at least a year long project in the making and I'm now comfortable releasing it to the public.


Background

This ROM is a patched version of the last known VR4 ROM released from Mitsu. It's been tested to work on ALL 98 & 99 VR4 ECUs. You WILL NEED a VR4 ECU to utilize all the features of my patched ROM. If you're using another ECU other than the VR4 ECU (Montero, Diamonte, SL, Base...) some features will not be available and there could be some unwanted side effects. I personally don't recommend anyone purchase any other ECU other than the VR4 one at this time. There are guys who have been working on modifying other ECU's to work in our cars. One guy is Adam (Jesters Dead) and the other is Brett (99 VR4).

More info here!

Link to Adams ECUs

Link to the Clone VR4 ECU Thread!



Prerequisite

You need the following:

Laptop running windows w/ at least 1 USB port.
Tactrix 2.0 Cable - DO NOT BUY THE 1.3 CABLE!! We need the power booster from the 2.0 cable for flashing.
ECUFlash
EVOScan V2.6 (It's $25, don't be cheap! ) - After you purchase, download and install EVOScan, you'll have to register onto the website to get v2.6. My file will only work in v2.6 as of now & no other logging program available will support my patched ROM.
98/99 VR4 ECU w/ OBD2 connector and flash port (Don't believe boomslang includes this with their adapters)


Getting started

First decide if you want Load Based tables or Air Mass Based Tables. Then Decide if you're going to run a EVOX Maps sensor or not.

Go to Chrome V1.0 and download the RAR file. (Load based tables)
*Special Thanks to Brett (99 VR4) for the hosting!!!!!!!

Inside is a folder with 1 file & 2 folders inside. One is the "Chromed" ROM, one is the definition file for the ROM and the other is the definition file for EVOScan. All 3 are tied together and are meant to be used in conjunction with each other. You'll find many of the features in these definition files won't work with a stock ROM.

The 3000GT folder contains the definition file. Inside the folder is the 23861006 XML file. Extract the 3000GT folder to:
C:\Program Files (x86)\OpenECU\EcuFlash\rommetadata\mitsubishi

The Chromed ECU v1.0 contains the 23861006 ROM itself. This is the file you modify & flash to your ECU. Extract the Chromed ECU v1.0 folder to:
C:\Program Files (x86)\OpenECU\EcuFlash\

Finally, the Data.xml file is the definition file to convert EVOScan to work with our cars. Extract this file into:
C:\Program Files (x86)\EvoScan\EvoScan v2.6\DataSettings
Replace the Data file in that folder with the new one. DO NOT use the 3000GT settings. MANY OF THE LOOKUPS ARE WRONG! Leave EVOScan in MUTIII mode.

Note: Sometimes there's an issue with installing ECUFlash/EvoScan. Read this!!

Greg I still can't figure out why I can't get "air mass" to display in EvoScan. The info is in the XML file you provided, in the correct location. What am I doing wrong? I need to start logging and tuning ASAP.

can you log load?

Nope. Only things relating to airflow or load are as follows;
-Airflow Rate gm/s
-Airflow/Rev
-Air Flow Hz
-Load MUT 2Byte Mod
-Airflow MUT 2Byte Mod
-Load Calculated
-Load11Bit4
-Load 1Byte

I don't know if I just did all the steps completely wrong or what but I'm confused.

very quick. Take a screenshot of evoscan and post it. I also need a screenshot of your MUT table.

MUTTscreenshot-1.jpgEvoScanscreenshot-3.jpgEvoScanscreenshot-1.jpgEvoScanscreenshot-2.jpgMUTTscreenshot-2.jpg

Let me know if you need more.

Ah, that's what I thought. you're still using the EVO XML for EVOScan, not mine. that's also why you can't log your wideband either.

Your data file is under the datasettings folder in EvoScan, what could I be missing?

Windows 7 and Vista have a feature called UAC. It makes a duplicate copy of your program files. This means when you try to install the EvoScan and EcuFlash .xmls, the changes won’t take effect, instead the duplicate .xml will be used

Try this! Uninstall EVOScan and ECUFlash and don’t reinstall them in C:\Program Files. Instead install to another directory created by you. For example C:\ECUPrograms\

V2 I'll have a different datasettings XML with revised instructions!

Now open up ECUFlash, go to C:\Program Files (x86)\OpenECU\EcuFlash\Chromed ECU v1.0 and open 23861006.bin. This file is a stock tune. If you've flash tuned your car before, you'll need to copy your tables to the new "Chromed" ROM. Sorry. I can assist with this if needed. It's a good idea to save this file under a different name. It'll still be linked to the correct definition file no matter what you name it or however many copies you make of it.


Chromed ECU v1.0 Features:

*larger fuel and timing maps (high and low octane)
*Ability to control fuel cut (called Boost Limit)
*Ability to run larger than stock fuel injectors
*All MAF tables defined
*Fuel Trim cut offs
*custom MUT 3 table setup for my custom data file for evoscan
*ability to log wideband thru pin 93 of the ecu (LC1 and AEM EUGO only for now)
*ability to log boost with AEM boost gauge thru the MAP sensor pin
*peripheries mapped out so the user can enable/disable CE lights
NOTE!!! Just cuz the CE light isn't on doesn't mean you will pass the OBD2 tests. I haven't even started looking into that area of the code yet
*stock boost control (98/99 VR4 ecu only!!)
*stock boost gauge modified to show engine load in a more useful manner (98/99 VR4 ecu only!!)


Chromed ECU v1.0.1 Features everything from 1.0 in addition to:

*Every table is converted from LOAD based units into Air MASS (g/cyl).
*"Boost Cut" is now named "Fuel Cut"
*"Air Mass" has been added to the EVOScan file. This is a 2byte log request that can be substituted for 2 byte LOAD.

Link found here!


Chromed ECU V1.1 Features everything from 1.0 in addition to:

*"Boost Cut" is now named "Fuel Cut"
*All the BCS tables have been adjusted to work with the EVOX Map sensor.
*Stock Boost gauge is now 100% accurate. The number you see on the gauge is what you got inside the plenum!
*BSC Corrections actually work as they should!
*Datalogging Boost (MDP) will now work with the EVOScan with the sensor installed.
*All tables are still LOAD Based like 1.0. v1.1.1 (coming soon) will have AirFlow Based tables.

Link found here!


Follow up

I've decided to make this patch DONATION-ware meaning if you use this on your car, shoot me a little something that you feel it's worth. There have been countless sleepless nights put into this project obsessing over all the little details.

Tuners: If you use my for tuning customer cars, I'm going to ask for $100. There's nothing I can do to enforce this so I'm just going to trust you guys to be honest with me on this.

paypal - nonstopmix@gmail.com

Also, the MAN behind the curtain deserves a little something for all this too. This guy is my fishing instructor. He's taught me everything about the H8/500 programing language and has played a MAJOR role in the development of this disassembly. The man is Jeff aka Gatecrasher. Please send him a little something too for dealing with my endless newb questions.

paypal - jeffv@xtreme3s.net

Special Thanks to the following board users for their generous donations!
*Chargerx3
*bboyalan
*Drummer
*Green Lantern
*Greg @ USCPerformance
*jazz9
*Jesters Deadd
*Zybrainn
*rmelton