First.... welcome to the insanity of owning a M3W. The best worst car ever made. Second, I mirror what others have said - it sounds like a fuel delivery issue. My hunch is you have marginal fuel pressure to deliver fuel, but not the required pressure to run the system properly. Injectors will not function below a certain PSI. The ECU tried to compensate and threw P0170 and P0173, etc. S&S actually recommends fuel be delivered simultaneously to both injectors, but Morgan delivers the fuel to one injector, then the other injector, then back to the tank. You can also search P0170 and P0173 in the forum. There is a long thread about me trying to fix issues with P0173 on my old 2013. Keep us posted, and good luck. You are in the right place for help with regard to your new-to-you 2013 M3W.