2014 640d / N57D30T1 Tuning Options

[moffat]

Hi all,

I've got a new 640d arriving in December which will sadly replace my much loved C63.

Can anyone tell me about the decent tuning options for the N57D30T1 engine?

I am happy to take a piggy back as I've used them before without issue.

I don't want the cheap and nasty £100 options.

I've been looking at AC Schnitzer, Kelleners and Hartge but I really don't get the £2k+ price.

Has anyone got any experience of the JB Diesel http://www.burgertuning.com/BMW_JBD_diesel_perform... or Superchips option for the car?

I'm really struggling to find an option for the 313hp version of the engine.

Thanks