Okay good, I almost had a heart attack . Looks like the old injectors were not Bosch made, and therefore crap. Got all new injectors and replaced them. I also fixed a couple of vacuum leaks, but I suspect there are more, because the car idles at 950 rpm. I also cleaned the ICV with ultrasound cleaner. No noticable change apart from car now always starts and keeps running for at least 20 seconds, sometimes even more and then just randomly dies. I hooked up my fuel pressure gauge and my control pressure (if I got this right) on cold engine start it rises up to around 7 bar and then slowly drops to 3,8 but it's always fluctating... Could be my return line blocked?

Comparison new vs old injectors

https://8czefg-ch3302.files.1drv.com/y3pOTunoaKYRgixslPlNfDSIvKxLdCcgU68qLLcSlof5wjTgk15FvAoD_vk_ycBtEW7W7OvhhOlqtaMnAa2o2I_y60X7LwTkcCCj JFpEpr1KIa25xGT9r8leKXHtTxjJXlEE36tORgt0Xg08B5yTytJlsxrNmUoIdWfO2hJzv43adE/WP_20150916_12_28_11_Pro.jpg