Just got my OpenPort 2.0 cable.
Went to test it out, and it works on my 98 ECU!
Think I'm the first person ever to flash a DSM ECU.
98/99 DSM ECU Flash FAQ
Capabilities:
EcuFlash allows you to edit all the factory maps.
In addition, the 98/99 map axis can be rescaled. This means if the factory fuel map had a max of 7000 RPM, you can rescale the RPM axis to go up 10000 RPM.
Some of the maps I have found so far are:
High and Low Octane Ignition Maps.
High and Low Octane Fuel Maps.
MAF Size, Scaling, Smoothing and Filtering.
Injector Size and Latency(DeadTime).
RevLimit and Idle Speed.
Boost Limit(Fuel Cut) and Boost Cut Delay.
The 98/99 ECUs also have many features that are turned off that can be enabled.
Some more interesting ones are:
Full Time Open Loop - The Front O2 Sensor is disabled, and Fuel Map Lookup is used all the time.
Lean Spool - The EVOs have had this for a while. An additional Fuel Map is used while the turbo is spooling, this can help spool time.
Limitations:
The ECU has a Load Limit that is MAF dependant, an EVO MAF will make the limit 380, a 2G MAF will make it 310. (This can be bypassed once it is found in the code)
Load is a measurement of AirFlow/Rev. You can use the formula Load x RPM / 43130 = lb/min, to get a easier to understand unit.
380 Load at 7500 RPMs gives a max airflow of 66 lb/min.
310 Load at 7500 RPMs gives a max airflow of 54 ib/min.
There is also an Injector PulseWidth Cap, its tied into the Load calculation.
The 2G DSM MAF Maxes out around 50 lb/min.
A EVO/3G MAF Maxes out at 66 lb/min.
The 98/99 ECUs may not handle the 95/96 Inverted CAS and Crank Trigger Setup well.
The Evo5/6 guys have reported the Black Cap 1G CAS works best when doing swaps.
Hardware and Software:
To Flash the 98/99 H8 ECUs you need the Tactrix OpenPort 2.0 cable. ->
tactrix
$169-189
You will also need the EcuFlash software which is free. ->
Main Page - OpenECU
Free
As of now the only Logging software that works with the OP2.0 is EvoScan. ->
EvoScan OBDII Mitsubishi MUTII DataLogger Scantool
$25
New -> MUT Monitor now supports the OP 2.0 cable, its still under development, but its free. ->
Mut Monitor Version 2.0 Released 12/04/2009 - MyRollingRoad & South West Mitsubishi EVO Forums
Free
ECUs:
These are DSM ECUs that are Flashable.
1998 -> 7/97-5/98 MD346675(FWD) and MD346676(AWD)
1999 -> 6/98-4/99 MD359402(FWD) and MD359403(AWD)
EcuFlash to DSM Dictionary:
Injector Latency = Injector DeadTime
Boost Cut = Fuel Cut
Load = AirFlow/Rev, More similar to Torque than Horse Power. Will peak early and lessen as RPMs increase.
How to Tune with EcuFlash for Beginners:
You need a minimum of a WideBand and a Logger.
Wiring in a 3 or 5 Bar MAP Sensor is very useful also.
Everyone tunes a little differently, I like to get my WideBand reading to match the Fuel Maps AFR exactly.
This makes things easier later on, and you will know precisely what changes to a Map will do.
1)
Get your Injectors Dialed in.
Originally posted by l2r99gst on evom:
1. Choose an injector scaling number
2. Log trims at idle and cruise.
3. If trims are roughly the same, but positive, then you need to lower your injector scaling number.
4. If both trims are roughly the same, but negative, then you need to raise your injector scaling number.
5. If idle trim is more positive than cruise trim, then you need to increase the latency value.
6. If the idle trim is less positive than the cruise trim, you need to decrease the latency value.
Note: After #5 or #6, you may need to readjust #1 accordingly.
2)
Rescale your MAF.
Check Out ->
How-To: Rescale your MAF (without pics) - evolutionm.net
3)
Raise or Disable Fuel Cut.
Boost Cut Delay Timer is the amount of time you must be above Boost Limit before Fuel Cut kicks in.
An easy way to remove Fuel Cut is to raise the Timer to its max value of 1,638,375 mS.
It is also a good idea to use Fuel Cut as a safety feature, so you won't over run your injectors or exceed the limits of your engine internals.
To do this simply raise Boost Limit to the max your car can handle.
4)
Rescale your Fuel and Timing Map Axises
I'll add more info here...
Tuning Guide is not finished...
ROM Files and Definitions:
*
7/1/09 - Changed naming scheme to follow the EVOs,
first four digits are Rom Name, second four are Revision Number.
*
7/3/09 - Added many maps and fixed axises, up to 48 maps now.
Changed MAF Table Units to Karmen Hz for easy scaling.
Fixed incorrect axis on Fuel Maps.
Maps with * preceding have had there axises confirmed in disassembly.
*
7/10/09 - Added DEFs for 20550010 and 20560010.
*
7/17/09 - Major Update 20+ maps added, Knock Control, etc.
XML files need to go in -> C:\Program Files\OpenECU\EcuFlash\rommetadata\mitsubishi\ecli pse
(Right Click and Save As)
98 GST - EM2055
98 GSX - EM2056
99 GSX - EM2364
* These Definitions are not complete, and some items may be incorrect. Use at your own risk.
Utilities:
ROM-ID by MadMan ->
http://ceddy.us/flash/ROMID.rar
Will display the ROM Id and Revision of unknown ROMs.
Adding a Flash Connector to a 95-97:
On 95-97s you must add a pin at position 79 of your ECU Harness.
This must be connected to the 2.5mm phono plug on your OpenPort 2.0 cable.
It must be connected to the tip of your phono plug.
ECU Harness Pins:
The EVO guys have reported these are the correct pins ->
TYCO ELECTRONICS / AMP|175265-1|Contact | Newark.com
I have a few extra ->
Ceddy's DSM EcuFlash Page
Miscellaneous Info:
Injector Flow and Latency
If you get flow values from a DSM site you should use the scaling "InjectorScalingDSM"
If from a EVO site use "InjectorScaling" in the Injector Scaling - Edit Map Menu.
For example an EVO site will give the flow of stock 450s as 424cc, but DSM sites say 450cc.
The EVO guys have a wrong conversion, but they have used it for so long everyone is use to it.
Another example is they give the Evo8 560s flow as 513cc.
Injector Brand ------ Flow cc/min -------------- mS
1G/2G ------------------- 450 ------------------ 0
Clinic 750 -------------- 750 ------------------ .330
Clinic 850 -------------- 850 ------------------ .330
Clinic 950 -------------- 950 ------------------ .330
Delphi 680 -------------- 680 ------------------ .210
Denso 660 --------------- 660 ------------------ .180
Denso 720 --------------- 720 ------------------ .405 - .450
FIC 650 ----------------- 650 ------------------ .210
FIC 750 ----------------- 750 ------------------ .315 - .330
FIC 850 ----------------- 850 ------------------ .315 - .330
FIC 950 ----------------- 950 ------------------ .315 - .330
Hahn RC 625 ------------- 530 ------------------ .180
ND 560(Evo8) ------------ 560 ------------------ -.048
ND 660 ------------------ 660 ------------------ .180
PTE 580 ----------------- 535 ------------------ .180
PTE 680 ----------------- 640 ------------------ .288 - .300
PTE 780 ----------------- 748 ------------------ .300 - .315
PTE 880 ----------------- 840 ------------------ .420
PTE 1000 ---------------- 940 ------------------ ???
RC 550 ------------------ 550 ------------------ .180
Using a EVO MAF
If the 2G's MAF 50 lb/min of flow isn't enough, you can upgrade to the EVO's 66 lb/min MAF.
The EVO and 3G MAF are effectively the same unit, so either can be used.
EVO Part Number = ???????
3G Part Number = ????????
The following changes will be needed. (2G on Left, EVO on Right)
First you will need to change the MAF Scaling Table. You can copy the values over by hand. Or you can open an Evo8 ROM and copy and paste them.
Second you need to change MAF Size from 286.0 to 357.5
Third you will need to change MAF Adder from 64 to 140.
All done! The EVO MAF should be good up to 675 HP, and people have pushed it further.
(If you are copying values from an Evo8, be aware that some have the MAF scaling set to AirFlow8 and some UInt8.
This will display different values in the MAF Tables. Make sure the scaling is set to AirFlow8 to match the DSM DEF.)
