I know that this will be an unpopular opinion with some.
With a warranty comes the conditions of the warranty.
It was wrong of your dealer to state that your controller would not affect the warranty when it is contrary to the warranty contract.
The programmers do not "etch" into the eprom... nor create a record of themselves per se.... What could have happened is the dealer sent in a photo of the sled as requested... and they got "dinged".
Although some dealers are willing to "obscure" mods from the warranty adjusters at the policy company or Polaris... there are less and less of them out there... It does not boil down to "this is a good dealer" or "they are a bad dealer" if they don't warranty items on a sled that has been modded. IF a dealer submits a claim on a sled with obvious modifications to it, and does not state this at the time of the claim, they put their dealership at risk (and/or the job of the service manager) ... so, a "good dealer" that wants to stay open will not obscure the truth when servicing a warranty claim.
Putting a fuel controller on the sled gives the user the ability to do things beyond the control of the factory. They know this, as well as those here on this forum..... that the controller gives the owner the ability to lean it out too much or make it too rich.
Here's an analogy... Imagine that you are a plumber... and installed new plumbing on a new house, to code, in a home and did a good job. The homeowner loves to get a nice High pressure shower... and cranks up the pressure regulator to the water supply on the house or pump... ...then the pipes burst in the walls. Would you cover it??
OR...
Try to take a Dodge / Ford / GMC diesel truck into the dealer for an engine/drivetrain related problem with computer/turbo/intercooler mods on it and see what luck you have in getting them to fix it under warranty.
At 2300 miles... you should expect to install new pistons on the engine IMO...That would be at your cost as it is a "wearing item" that is "worn out" and not included in your warranty coverage. To me, 2300 miles is pretty darn good.
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Well said. Everyone wants to blame the dealer BS gets old...