have a 5 pot audi (2.5 tdi) . have booked it into a well respected local specialist wo is going to completely recon/rebuild them. 2 stage injectors so will check + correct breaking pressures if needed etc etc
what sort of improvement can i expect from a well built set of replacement nozzles ( genuine bosch not chinese cr*p!) will give me over mine now ? they have 160k miles on them . improved performance/ smoothness/mpg ? anything noticable ? just curiosity really.