diesel tuning is just the same as conventional tuning methods,
better breathing.......... pannel filter, exhaust mods, bigger intercoolers THEN live mapping releases so much more potential than the usual generic shit
we`ve had/done lots of 335/535d motors, everyone is after power......... why?
you need torque man lol
but with this comes constant traction control issues, DOH!

seriousley, new age diesels are ferocious when they are propperly breathing and had the shitty flaps put in the bin