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Backfire when opening throttle

drz440@live.co.ukdrz440@live.co.uk Posts: 51Verified User
in R1

Can anyone help?

I’ve flashed the unrestricted map onto my 2017 R1 EU spec bike. I have a k&n air filter and a pipewerx decat exhaust. It all runs ok but when I begin to open the throttle back up after rolling off, so I’m still moving at this point, I get one very loud bang from the exhaust. Does anyone know what might be causing this?

Thanks in advance

Comments

  • drz440@live.co.ukdrz440@live.co.uk Posts: 51Verified User

    In case anyone else has this issue, it seems to be only when I have the fuel cut enabled. It appears to be when opening the throttle back up that the initial charge of fuel ignites with a bang as the engine restarts.

    With the fuel cut disabled this doesn’t happen, I just have the crackling on the overrun.

  • davemusaphia@btinternet.comdavemusaphia@btinternet.com Posts: 38Verified User

    Have you got the AIS block off plates instaled? Mine souned like Gods own machine gun on the overrun untill I did that! 😂

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