Mine is a VR-4 engine swap into a 1997 Lancer. My tach works fine with the 1991 md165808 single board and 1990 dual board md128618 ECU. I just switch pin 6...
There is only a tach issue with 1989/1990 cars trying to use a 1991+ ECU. Since we didn't get GVR-4's here in 1990, its never been an issue with them, just...
You have a JDM and need to swap pins around? I have an 88JDM which came with 8618, ive put in a 5808 and it runs fine, i dont need to swap any pins. My Tach...
That's normally a sign of a failing ignition power transistor, try another one, or another 91+ ecu - could be something dodgy with the one you're trying....
In my Talon 91 TSI AWD in TCU is M673 code - binary is the same as putted in file section by Christian in TCU\M673_TCU_source.zip\M673_TCU_image.bin . So I...
This is what I have come up with so far so bear with me. Here are the parts I had to play with ,meter cluster 90nt ,91t , 3299 and 9599 , 5903 ECU's . First...
I never realy payed attension about the firmness of shifting after a reset but then again I hardly ever do it . If this is so is there some kind if "TRIM" that...
Kenneth, I believe you are wrong about pin #109 not connecting to anything. I have traced it out as follows: From the anode of D108 there are 2 resistors, a...
I stand corrected I see it know but not before .Some corrosion and the trace from r46 was right under white line outlining one of the boards. . So yes it might...
Andrew, Yes, I have a JDM VR-4 engine. The original ECU from that engine is 8618. I remember I'm running very rough idle using the 5808 when I didnt switched...
Im perty sure its ECU related. I have tried about 5 different 91+ ecus to confirm and they all do the same. Pop in a 90 ecu and it works perfectly. This...
... For instance, when you log code $00 with MMCD debug screen, the TCU returns the content of memory address $33 (not $00). This is the offset. I burned an...
I've had a look at the site, but it seems that the 28-pin DIP packaged 29C256 is 150ns read speed on the datasheet. The PLCC version is 70ns though. I thought...
Isn't the shift load dependant? As a function of the line pressure and the position of the valves, so would be in a different place going up a 10% grade as ...
The shifts will be done acording to thae shift maps in the tcu . The line pressure will not change goin uphill or down .It is only changed by the tcu...
... If I wanted to run a 91+ecu then I would need to ... Or, just swap in the 1991+ transistor, leaving the dash tach feed off the 1990 tach driver, and the...
In a message dated 8/2/2006 12:34:03 P.M. Eastern Daylight Time, ... Motohead1@.., Mo If I wanted to run a 91+ecu then I would need to ... Or, just swap in...
I think I located the trims and tables for the pressure control solenoid operation during shifts. The three trims are located at memory address $45, $46 and...
That's really cool. So in theory if you wanted you could tune the tables until your shift speeds matched what your shift kit was designed for, and when you...
I have no experience whatsoever tuning a transmission so I can only speculate. Here is a lot of it... First, these trims and tables are only one part of the...
To some degree it must depend on the maximum pressure that can be achieved only by software. If the max doesn't allow to reach some target shift time then...
When I put in my trans lab kit I thought it didn't realy shift that much different ,even took off pan and did some more adjistments to the pressure reg goodies...
I did an FAQ on how to mod the ECU to use a dual-image EPROM. I usually put the pump gas image in the upper half of a 27C256 (4000- 7FFF), and a race gas image...
As I understand this mod uses internal pull-up of A14 EPROM address line - am I right? I'm always confused about not connecting input line to high signal ...
Iam confused (easly done) But in the table like the first colum 1E would be 150ms would this be at 100% throutle or 0 % as the last 6E is 550ms I would think...
150ms would be at 0% throttle. I would think that it is faster at lower TPS because the engine doesn't output much power and therefore it takes less clamping...
Exactly. If you use a 512 chip, you would also toggle pin #1 to address all 4 images. The way Mitsubishi arranged the pins, it doesn't matter if you use a...
I'm not a big fan of this mod. I'd be really concerned about possible static damage to the ECU. Also, that long antenna you've got going into your ECU *will*...
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