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stupid idea to extend power curve with adjustable inlet trumpets - many cars went to crazy in the 1990s with inlet manifolds that have two different low and high speed air route to the inlet valves... they swap over at a certain point to allow for more top end grunt/ lower rev flexibility
but its made of junk and it was really designed to write of the vehicle later in life - by destroying the engine
the plastic flaps inside out of sight within the inlet manifold, snap off and get ingested - often wrecking the engine
its possible its at present only the STUPID weak and deliberately hard to see, reach, lubricate, check, maintain, vacuum linkages at the front of the manifold that's almost completely hidden by the aux air pump rubbish - there are joke kits to try and repair these failed linkages - and a pathetic solenoid that gets stuck that switches the vacuum flow to move the flaps, its left of the dip stick at the very front of the engine - apply 12v and listen if it moves with a nice click and clean the gauze inlet filter (if not lube, kick and throw some volts to exercise it till it frees up - then move to the linkages you can't see - and clean lube and check they move freely on both banks
when all that's not helping splash $600 on a new inlet manifold - you'll be surprised everyone on ebay sells them...
if you check the code 1060 vs plenty of identifiers on the internet - TimC300's already posted about that - its saying info the car is getting from B28 isn't correct in general this MAP sensor should give the engine ECU this info...
The PCM supplies a 5 Volt reference signal to the MAP sensor. Usually the PCM also supplies a ground circuit to the MAP sensor as well. As the manifold pressure changes with load, the MAP sensor input informs the PCM. At idle the voltage should be 1 to 1.5 Volts and approximately 4.5 Volts at Wide Open Throttle (WOT). The PCM looks for any change in manifold pressure to be preceded by a change in engine load in the form of changes in throttle angle, engine speed, or Exhaust Gas Recirculation (EGR) flow. If the PCM doesn't see any of these factors change while detecting a rapid change in MAP value, it will set a P0106.
Its quite possible your engine ECU is toast - they get hot fill with gunk and fail...
If you need to do a new intake manifold, it's not a bad job to do it yourself. I just did mine last week, and put in new fuel injectors are various other sensors as well. I have a misfire at 1 & 2, but I think I know what is going on and will address it today. Be sure to align your gasket correctly.