HDI and different ecu's

[Uberderv]

I've had some 072 injectors that I need to install for a while.

I'll get them installed and report back.

Before installing used injectors do you ever remove the nozzles, clean them and the needle?

I normally use caustic soda (can of oven cleaner) to clean the carbon and residue off. Most the time I've taken the nozzles off I've noticed some brown discolouration along the needle.

  
I've cleaned them before using BBQ cleaner, it can restore the correct spray pattern but obviously can't do anything about wear.
  
I find the BBQ cleaner is thinner which is better for setting up a little rig to force it through the nozzle.