Hi All, I have a 2008 Suzuki DRZ400 with 12000kms, It has a full FMF Q4 Exhaust and the 3x3 Mod and the JD jetting kit. I have had it for a couple weeks now and has been running great up until last weekend. I was riding along when suddenly the engine sputtered and died. It fired right up again and I was able to make it another 15 miles before it died again. then again after about 5 miles. This only seemed to happen when the RPM was just off of idle. Higher RPM's still work great. It starts and idles just fine but if I blip the throttle the engine will stumble and die. I dont think this would be a jetting issue because nothing has changed since I bought the machine but now the problem is very obvious. I took the carb out, cleaned it with carb cleaner, reassembled, and still the exact same problem, low Rpm stumble and die. Is there anything mechanical that could cause this? something electrical? It has gotten slightly colder outside over the last couple weeks but jetting wouldn't be that sensitive would it? Any help is appreciated!!