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Borrow a Direct Ignition Cassette (DIC) and swap it out to eliminate that as a culprit, it is an easy five minute test.

Is the 'check engine' light on? If so have you checked the codes?
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P1312 and 1334 point to the DIC. The P1105 and P1107 are probably related to the MAP and the sensor on the big plastic inlet tube that connects to the TB (sensor at the other end at the BPV). Could also be connected to l vacuum hose leaks as well so would check all the vac hoses and all major connections (inter cooler hoses, connection at TH, etc). Also seen a sticking waste gate on the turbo throw the 1105 code.
 
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