Hello my name is Erik I have a Mustang GT 2006 and I come from the Netherlands (unfortunaly). I have problem the ECU gives me the codes P0171&P0174. This problem came after tuning the ECU with SCT. The device was broken and I can't get my tune out of the ECU. Does anybody can help me with this problem I've checked the engine and everything so I know for sure it's the ECU. Can I delete everything in it and set a stock program in or what? Please help!

 

If that happened after the reflash from the SCT then the problem is the software. You must put factory software back in or get another performance program.