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I've given up waiting for a remap on a 2.0 CDTi SS GTC and am planning on getting a DTUK box. I had one on my last 1.9 CDTi but it caused lots of black smoke when I accelerated. There was only 10k on the car at the time and the smoke issue stopped when I took the box off to sell the car. I was delighted with the performance increase however and would like to hear from anyone who has fitted a box to a GTC if it causes black smoke.
 

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I'm sticking my neck out here and will say I bet it will. The increased power is because of increased fuel. So it will smoke. As most diesels do when booting it, even when standard (Y)
 
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