BMW 4 Series remapping/norwich Norfolk
Holt road tuing/chiptuningnorwich are proud to offer a stage 1 and 2 remap fro your BMW 4 seris.
as with all our remapping options we 100% gaurnetee that if anything should fail throughout the process then you are fully protected..
Sometimes however there can be underlying isues that may not be seen.EG
Ri fracture in a solder wire of a bosch EDC16U31 ECU . air leak within inercooler system,
However i am 98% confident that we will have