took my car for the swirl flaps to be removed, the garage tried to sell me a ecu re-map whilst i sat waiting, he quoted me 450 quid and said this was the best gear around for the bmw car, i did mention that there is a guy on here that does re-mapping for 250 and he said oh thats ok but is it the proper software that is being used ?? this got me thinking , is there a good re-map and a bad re-map ?? if so how do you know who to trust ??
can anyone help me please