Popping Sound From End Pipes

[LUNLUNZAI]

I can hear there is a pop..pop sound from the alp's pipes at a intervels of 10-15 secs, intervals gets longer (25-30sec) when engine is fully warm up.

Is it something to worry about?

[babybadger]

I can hear there is a pop..pop sound from the alp's pipes at a intervels of 10-15 secs, intervals gets longer (25-30sec) when engine is fully warm up.

Is it something to worry about?

Sounds normal to me, might be carbs out of sync slightly. Make sure all hoses etc and exhaust joints are tight.