I just got myself a backup set. My original plan was to wait for FCP to get the rb remanufacturing index 12s in stock and snag those. Well I purchased and checked out for about 800 for the set. Got an email a day later from them saying they couldn’t fulfill them. The problem is the cores for remanufacturing these injectors have also dried up. So even those folks that managed to get these remanufactured injectors will likely not be able to get them warrantied as I doubt they will be reliably back in stock.
What I did was bought a set from eBay (still paid 850 for 6 index 12’s). Then I sent them off to theinjectorshop.com to have them cleaned, piezo stack regenerated, serviceable components replaced, and tested against factory test plans (this ensured I would have quality injectors…I could return if it didn’t work out). Each came back good to near perfect after they were “remanufactured” with test reports. So now I will always have a back up pair. I will pull mine and send them in for the same service.
The service is about 40 bucks per injector. There are only three places (gb remanufacturing which exclusively supplies FCP, the injector shop, and as someone mentioned injector-rehab) that I know of that provide this injector service as the equipment can only be sourced from GB remanufacturing (sold by carbon zapp) and is very expensive.
Prior to getting the service done, I reached out to Scott Fleenor who is the owner of theinjectorshop. Scott was very responsive and up front. I’ve attached a report of one of the injectors services. Each test plan that is supplied by seimens VDO is run on the injectors. The test plans correspond to the 6 digit code on the injector which is also used to properly inform the Dme of the injector calibration. Note that in between the dotted lines represent “near perfect” test and anything in between the solid lines is a pass.
It’s a shame but I love my E92 n54 335is and intend to keep her on the road for the long haul. Also, at this point pretty much every part is free since I bought my parts from FCP. And i do all my own work.