Finally got round to working on the car, replaced both boost solenoids which fixed my 30FE overboost code, pretty straightforward job just have to be careful not to drop the nuts, also wouldn't recommend doing this after driving the car, I burnt my hands about 5 times as they sit right above the exhaust manifold.
Took the car for a spirited drive on some coatsville backroads and car had zero issues, no error codes no overheating, sat at 110deg the whole time.
Also finally ordered a set of backline taillights, price worked out cheapest through continental cars bmw, should be here tomorrow, should help make the rear end look a little bit more modern.
Also changed up the suspension set up again, more on that later...