6 flashes on check engine for bad fuel and or do not modify engine. I got a new DET sensor in, new injectors put in, had the TPS sensor check and have had 2 new fuel tanks installed, but still flashes 6 times on check engine. Before that, I put a Precision Performance muffler on, before the ECU opdate. After that, it just went down. I then toke the muffler of and standard muffler on again, but still not any good. Anyone please help!!!!!! I live in Greenland and we don´t have a Polaris dealer here. What to do??