Engine cuts out at higher speeds?

[Mechaniac]

I have a 2008 Mean Streak 1600, about 10,500 miles on it. It has an issue that seems to slowly be getting worse. I'm hoping someone on the forum has seen this and can recommend a way to check for the fix.

The engine runs great but starts to cut out randomly at about 110 and will get worse if I keep the throttle open. Sometimes once it's doing this it will reoccur at speeds as low as 85.

It feels like ignition because it's either full power or none. Fuel would fade in and out slower.

I have access to pass through spark indicators but that won't tell me the cause. I also have scanner with a built in scope, but I don't want to spend hours trying to orchestrate that on a bike at high speeds.

It has a Cobra fuel tuner on it. Swapping ECM's didn't change it. Level in fuel tank has no effect.

I'm planning on cleaning and tightening grounds as that seems to be common issue with the Vulcan electronics.

Any tips?

Vernon