OhZero

So I recently did a head gasket and am pretty new still to BMW. Now when reassembling the timing I used the tool but I had already had the intake manifold on so I didn't put the pin in the back. All I did was top dead center it and it started up but had a check engine like for camshaft, vvt, and engine performance, which all leads to the timing. So jump to today I have had the timing jump on me numerous time, today I went ahead and took the intake manifold off and put the pin in, timed it perfectly, replaced the VVT, eccentric shaft sensor, and the 2 Vanos Cameshaft solenoids. New spark plugs and coils. Reassembled everything and it wont even start now. Saying it's misfiring, won't even get up to an idle, so I'm assuming it jumped... again. Now I did torque the cam shaft sprockets to 20nm with the additional 180⁰ turns and it still jumps on me, what am I doing wrong here? I also have checked the valves each time with a mini camera, the camshaft goes out of time, but not enough to bend valves, just enough to annoy me greatly.

Voltage in White/Yellow wire on pedal was 0V. Traced it to a broken wire. Soldered and started normally, thanks for all help in this.

After further inspections, that pin does absolutely nothing

Little update, took my ECU out for a 2nd time to observer the pins as I had not originally and had found a broken pin. Would this correlate to what my problem is? If I need a new ECU, would it be easy to swap in and out or what I have to get it programmed from a dealer?

A little background leading up to this; I first replaced both clutch lines, from master all the way to slave, so i did end up removing the gas pedal temporarily to get access to the master. It had sat all winter with the battery dead. Now mind the CCV system had been failing for a bit but was still starting fine and what not. Until after winter I had jumped it and gotten a new battery for it I had heard a bit of sparking noise coming from the ECU area, i wiggled some wires around and it had gone away, took out the ECU and inspected it for any water damage. It did not. Checked the fuses around it, all good. Now it was fluttering bad with the gas pedal not working and a bunch of codes popping up (will list down below). I had to do a head gasket anyways and planned on replacing a bunch of seals and the CCV all in one go hoping maybe replacing the CCV would do the trick. I had also replaced the flappers inside the intake manifold. Fast forward to now, I finally got it all back together and started it up with the same problem as before. I tried the reset adaptions and looked over a majority of the fuses that would corelate to they throttle system. I am pretty stuck and have hit a dead end, I would really like to narrow it down before wasting money replacing everything that goes with the throttle system. Codes that immediately pop up; P0102 P1417 P1553 P110D P2120 My scanner does have the BMW Enhanced or whatever if those codes would be more helpful, let me know.