Jetting for Yamaha YZ 2T bikes

But the pilot jet recommendations are far off, ie 5000 to 10,000 asl only recommends a turn out on a/s when I’ve found 2 sizes down on pilot is necessary, seems to recommend rich settings here. It’s difficult to input elevation with the keyboard being in the way.

This app is glitchy. It won’t let me input elevation and doesn’t have all the info for my bike.

I use this app for all my two strokes. I live in Reno Nevada and ride Nor Cal MX tracks often. The jetting recommendations is always spot on for me. More riding and less jet changes. 😎

Come on man we’re riding 2023 bikes and this app is still back at 2021 please up out an update already

After playing around with the fine tuning I can re-jet with local weather data and the bike runs like a champ .

My bike runs very well with the setup given by this app. Oil mix ratio adjustment is fine too

My YZ125 was too rich with stock jetting. After set up the carb with this app, the mileage has increased and the engine runs like a dream

Hi, like the idea of this app and want to use it, but the specs on the app are incorrect for the 2019 (2020 is the same as 2019) YZ85. In 2019 Yamaha redesigned the YZ85. Can you please update the app or refund my money?  Here are the correct stock specs, please verify though. YAMAHA YZ85 JETTING FOR THE KEIHIN PWK 28mm Here are MXA’s recommended jetting specs (when changed, stock specs are in parentheses): Main: 145 Slow jet: 45 Needle: NBKF Clip: 4th from top Air screw: 1-1/2 turns

Great app to dial in mine and my kids bikes as they are different sizes. Also riding year round and at different altitudes makes rejetting a breeze. Bikes run great and are responsive like they should be and I expect.

This app is still suggesting the 2006 and older needle jet N3EJ as standard for just about all temps/ elevations for a newer YZ250 including warm climate close to sea level. Yamaha changed to the N3EW needle in 2007 as it improved bottom and mid range. I assumed I needed to go with the leaner N3EJ needle as per this apps suggestion so I purchased one. It is not an improvement. I did plug in 2017 as the year of my bike. Take some time and get everything correct and current for one of the most common 2 strokes available. The other settings seem accurate. Also not a huge deal but a nice touch would be to list the YZ250X as a selectable option. I get that the jetting is the same as a YZ250 but at least list it.