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doesnt sound far off from running
sounds like it sprang a boost leak,
then someone fucked the timing by pulling dist
all u gota do is re-insert dist proper toothing (not difficult if you understand cyl#1 points to plug #1 etc)
then pressure test for leaks
and make sure everything is plugged in
it goes MAF -> ECU -> INJECTORS
SO if the a/f ratio is ever 'wrong' its obviously which three things you gota check
ecu plug could be loose, ecu can be bad, ecu can misfire 1 cylinder, ECU can do anytning but luckily KA ecu are cheap always keep a spare
MAF can go bad but almost never does. boost leak is a maf problem because maf reads ALL air molecules going in OR out, and includes any air molecules which are destined to leak as well.
injectors get clogged, or mis-wired, .. the fuel pump stops, the regulator sticks, etc... but that doesn't sound likely here unless FP is pegged so always watch fuel pressure to verify
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