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rough idling+engine wont rev


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Hi, i recently fitted a lupo sport inlet manifold and throttle body to my 1.4s but ive had problems with the car such as rough idling. The car sounds as if its cammed when at idle. On occasion the car will also cut revs and wont rev at all, i do have engine codes and i have checked them, it says P0106 - MAP/Barometric Pressure Circuit Range/Performance Problem

It also says fuel bank trim 1, i have replaced the map sensor but did not fix the problem. The car is fitted with a gti throttle body which has extra vacuum pipes that don't connect up to my engine. I was wondering if it was just a case of there not being enough fuel and that it just needs mapping but am unsure if it is something else. Does anyone have any ideas to what it could be?

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