I have a E60 535D M sport.(2004)
I've already had it re-mapped but came across a sprint booster on the internet.
Any good??....will it complement the re-mapping already done???
Also what other performance enhancements could peoplle suggest such as:-
de-cat exhaust down pipe
induction kit.....can't seem to find one for the 535d
what sort of gains could i expect on top of the re-map