I have a 2018 KTM 500 EXC and my wife has a 2017 KTM 350 EXC. In stock trim, both bikes suffered from overly lean (unstable) idles, stalling and felt generally under-powered. After removing the reeds in the airbox and the two perforated screens in the exhaust tip, I installed this tuner on each bike. On both bikes, the tuners cleaned up the idle and GREATLY reduced stalling. It really improved throttle response and power (especially from mid-range and up). It’s a simple install. It will take you longer to figure out where to route the wires than anything else. Figuring out how to program it can be a little confusing, but don't let that scare you. Follow the instructions and you'll figure it out. It's worth it! For 2017-2019 EXCs don't mess around with adjusting the TPS… just get a tuner.
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Works well to correct the lean running conditions from the stock fuel map.
I noticed a difference in power delivery after install.
This device really turns the tunning of my bike a easy work...in many conditions I have easy access to set the bike...