I have a 2008 Nytro RTX and every so often when I let off the throttle there are a few of pops from the exhuast like a backfire – Usually after the rpm’s wind down.
I’m wondering if this has anything to do with Yamaha’s new de-accelaration? like in Arctic Cat’s 4-stroke Jag to eliminate back pressure?
Thanks for your email!
You’re experiencing a drop throttle back fire as a result of the Nytro’s low restriction performance exhaust.
Essentially when you chop the throttle abruptly there can be a small amount of raw fuel escape into the hot pipe and it does what fuel does best – ignites – and produces a backfire.
Nothings wrong – lots of low restriction exhaust systems are prone to this.