My initial guess would be that the PGM-III failed, most likely, looking at the rest of the bike, due to poor maintenance! Rather than go to the "expense" of another PGM-III, someone has transplanted an older, invariably cheaper, 1988 PGM (ECU) and harness. (The 1988 PGM "I" is just called "PGM".)
Once the harness was transplanted, they've found that the air correction plumbing didn't match, so sold/swapped the carbs for MC18 carbs... which are also extremely suspect, looking at the internals you have pulled from them!
The MC21 may be the Japanese gymkhana weapon of choice, and sorry to be the bringer of bad news, but I'm afraid it's going to take an awful lot to ever get that bike to be anywhere near back to running like an MC21.
My advice to you would be to bite the bullet now, and source a PGM-III, and 90~93 MC21 harness and carbs.
Sly Fox wrote:
What do you think about the PGM module, should it have more plugs?
Sort of in answer to your previous question, the PGM, PGM-II, PGM-III, and PGM-IV all have their own unique harnesses. So, technically no, the PGM has the correct number of plugs on it... for it to fit to a 1988 harness!!!
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Andy.
NSR-WORLD.COM
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