Does everybody with a Diesel get them mapped? - Nope

Who do you recommend for the job? Joe Power - based in Rathcoole / Newcastle area and uses a dyno while mapping. Search him on the net to see reviews.

How much should I expect to pay? 250 - 350 depending if you have a guy in a car park plug in and upload a map or go to someone with a dyno

Is there any reason why I should not get it done? Insurance is affected because its no longer standard

Hope this helps,
Cormac