[Cas9116]

So I bought an e90 4 weeks later found out engine had to be replaced as some clown had ruined the block and hid it 2k later bought an e93 engine and all was well for first week now it started with a shaking like I was on a boat and soon got worse and I was loosing power and acceleration, then it started with the idle dropping to around 500 and jumping engine making a crazy noise I've had it on a snap on reader did the process of elimination changing; sparks coil packs vanos it had full service on change over and engine fitted had 38000 miles and was tested, ive also checked injectors manually and through diagnostics and all seems good, I just cannot get this car to run properly and it's throwing the engine fault message on the I drive while shaking and stuttering horrifically if u accelerate u don't get much response and if it does it can backfire, I have got it idling well 3 times but as soon as u drive it or switch engine on and off it again stutters/shakes and jumps from 500/700 on idle sometimes it shuts down sometimes it doesn't but nothing I'm doing is fixing the problem and I just can't seem to figure it out this car is becoming a money pit and I've only owned it 5 weeks 😪 I can't seem to add the video