These were just kind warnings and help, if he has not used them yet then maybe it is possible to get them exchanged for bigger, but of course he does not have to do it if he does not want more power.


Regarding flow variation, I bought 8pcs 1500cc from a webshop that said that they were matched by Bosch but I did not get a paper on this so I let another company measure them and there was a difference of up to 11% between them! If I had mounted them, there would have been a risk that I would have melted some engine pistons.
It was after this that I researched and even talked to Bosch, so I returned these injectors and bought from another company that has flow-matched injectors, have since heard of others who discovered this flow variation from other companies.
One guy bought 1300cc injectors and after flow test it showed all had different flow and it showed between 1187cc to 1264cc

Bosch answered me: A normal tolerance is less as 5 % but this high flow injectors are without an orifice plate so it is possible to have 15 %.

So this is just a nice warning and something you should keep in mind when buying injectors.