For those of us who would prefer to keep our perfectly good working injectors in that condition is a nozzle upgrade an option? I noticed both DIY and Diesel Care sell nozzle upgrades. Diesel Care says you can get 100hp from their nozzle upgrade which to me seems it can be a simple and somewhat worry free upgrade. Im a bit leary of pulling injectors apart or for that matter having them pulled apart. Can anyone comment on possible power gains from nozzles, and if nozzles make a difference enough that the current HPOP wont be able to keep up making it a moot point?