That is 100% a MD145903 E2T34478 1990 Federal MT non-EPROM ECU. I have seen them built from both the JE331A942C PCB and the JE331A979A PCB. They are functionally the same but I've never sat down and documented the actual differences in the PCB to learn why they respun the newer PCB. And then the...

Besides the Brake line attachments on the later calipers there are other differences. The DSM and GVR4 dual piston calipers (M-R56W) has a slightly different piston size from the Diamante and 3000GT NA dual piston calipers. (M-R57W) 41.3mm vs 42.8mm. Hence the part# difference.I doubt you...

It doesn't for me. Maybe Chris fixed it. Are you still seeing the same problem?

Quoting prove_it: IIRC, it's a 7500 redline, 6k studderbox with 680cc injectors, 2G mas sensor tuned for 91 octane running 10.5:1 fuel ratio with the knock disabled at lower rpms.I don't think it has knock disabled at lower rpms but instead the boost gauge repurposed as a knock gauge. The...

He has to drive pretty much past me when he commutes but I don't fix ECUs anymore.

Flipping the pins takes all of 20 seconds now and I can almost do it in the dark.

Quoting cheekychimp:As far as I know, the ECU has only been flashed for 560cc injectors and that wouldn't necessitate a higher idle so I am assuming it was set for stock but I don't know and I'm not sure how I can verify this without a chip reader.Is the chip labeled in any way? Who made...

You make still have an ISC but it doesn't sound like it's working.What the idle speed in the ECU set to? If it's not 950-1k then you have to have driven the ISC out of range (all the way closed) before the idle rises. The ISC won't do squat until the RPMs drop below the programmed idle. Have...

Those are original caps and they have leaked. The front 47uf one leaked and shorted out. If you were having voltage problems from the alternator that might have been the final straw.Looks like the CPU chip might be blown too. The smudge mark on the top of it looks interesting.

Not if you retune (or at least change the injector global correctly) for the new fuel pressure. It shouldn't make any difference unless the injectors weren't working correctly at the lower base pressure. Then you might see better gas mileage at the higher base setting.

Between the GVR4 guys and DSM guys there are a bunch in the west/northwestern suburbs

Quoting H05TYL: What does the whoreshop manual say to use?It says light oil or petrol.

Quoting stealthtt24: Not my picture but the locking pin is the one on top.Actually the guide pin is the one on the top and the lock pin is the one on the bottom.

That's too bad. The 47uf cap shorted and burned up. Looks like an otherwise clean ECU but since the original caps weren't changed out it's now done.

Yes, you need a turbo ECU. You may need a California turbo ECU to pass smog.