£120 for four injectors isn't correct, someone said about £15 each the other day.
At £120 its half the price of brand new injectors new from Renault.
I was at Blink Motorsport yesterday, and I asked about this service as they clean injectors for about £10 each. They can do a drive in/drive out service, but were unfamiliar with taking them of a 182. Is it a straight forward job? We looked and it seems that the fuel rail is under another part at the front of the engine that maybe unbolts.