I'm running a V88 Vipec , during Christmas I left my car alone for 4 weeks and all was running fine. Since iv returned from holidays I've added a second fuel pump to aux7 and also added an oil pressure sensor, and recalibrated the tps. When starting the engine the volts were dropping to 7v while cranking, I found a faulty power wire to the ECU and changed it which corrected the issue. Problem I'm having at the moment is the engine won't start! There are no error codes appearing so just lost as to why all of a sudden the engine won't fire up. Help needed cheers.