I suspect it's the installation of the rear foglight. I had that issue when I accidentally wired mine incorrectly, and it caused a drastic decrease in power with vdc/abs lights on. Try removing the foglight and see if it is fixed.
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Magnetic Black Touring/Sport/Navi/6MT < Stillen G3 | ZSpeed Stage 1 Clutch/Flywheel/CMAK | RJM Rev 3.2 Pedal with Tilton Master
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