530d chipping

[darren no 7]

hi all just got a 54 plate e60 530d and would like to get it chipped have seen tuning boxes on ebay but are they any good?,or is there any one that you could recommend thanks

Edited by darren no 7 on Wednesday 6th August 21:21

[darren no 7]

did it make a lot of diffrence and has you mpg improved thanks