2600 rpm missfire

[780ghostrider]

Anybody else experience a miss fire at 2600 rpm..
If I rev my sled to exactly 2600 rpm it misses/ stumbles. Only run premium no ethonol. Under 100 kms on sled.

 

[Goober01]

Anybody else experience a miss fire at 2600 rpm..
If I rev my sled to exactly 2600 rpm it misses/ stumbles. Only run premium no ethonol. Under 100 kms on sled.

The easiest thing to try is a set of plugs and go from there

 

[cannondale27]

Anybody else experience a miss fire at 2600 rpm..
If I rev my sled to exactly 2600 rpm it misses/ stumbles. Only run premium no ethonol. Under 100 kms on sled.

Which flash is in it?

 

[780ghostrider]

Not sure just bought it a month ago out of the crate. Has under 100 kms. Don't think it's plugs. Thinking maybe software. Only stumbles at 2600 rpm.

 

[petey_sx700]

Possible throttle override sensor? That would be right about when the throttle switch contacts. I know when standing mine will choke/kill if i press down on throttle instead of in. Been gonna try a new switch or some have had luck loosening throttle cable a little.

 

[TD Max]

That's just the typical exceptionally lean sag in the fueling curve. You can work that out with a tune or a power commander.

 

[cannondale27]

Many have said that stumble is helped with the new flash also. Some say it's worse. There definitely is a stumble about that rpm stock.

 

[780ghostrider]

Thanks that's what I wanted to hear

 

[DT]

Mine does it also http://ty4stroke.com/threads/viper-engine-tune.135771/

 

[larrypolaris]

Mine does it too. It sounds worst with my can on it.