Originally Posted by coopersim
I'm going for broke, I've got both, I'm doing that and the glowplugs, hopefully on Thursday if the weather is ok, I'll do the photos and write up - I doubt it will be a hugely different job to a 335d?
Almost an identical job
The glow plugs are easy, just time consuming removing all the plastics, whilst you have the inlet off remove the swirl flaps too
I now it's not essential, but it made positive improvements to the power delivery and drive of the car (335d) once the ecu had adapted (somewhere between 1 and 2 tanks of fuel)