26 minutes ago, Earthmover said: Im a new owner a of 2012 500 EXC and since i got it its starts roughly (needs 5-8 turns to start). I figures i should start with the TPS adjustment and see what happens. Checked TPS position today and it was at 0.56 wich is way off after reading this thread. Tried 0.61 0.62 0.63 0.635 0.64, and seems like the throttle is happiest at 0.635 wich is what i set it up initially. The throttle is better, and seems like the backfires sattled down to a point they allmost gone as far as i can tell. Problem is its still starts roughly. Any suggestions how to proceed? I thought about taking the injector out and clean it (looks like a pain to get to it), anything else to check? Thanks. With the screen out of the end of the muffler, .635 to .640, pull the little filter out of the fuel line and replace with the NAPA inline, clean the injector which is quite easy, there's multiple videos on Youtube. If it hasn't been done ask your dealer to install the Euro 701 map. You may have to set your TPS closer to .620 with the 701 map. A number of the hard starting bikes I've looked at actually have the idle set a bit low. Once it's set up right the bike will immediately start whether it's 20 degrees or 100 degrees without the choke. I have a '12 and a '14 and both do now.