Exhaust pop/choke - whistle

[HarryBee]

Hmm... my 03 seems to have the same slight whistle as the original post. Happens from 1500-3000rpm and then it disappears. Runs great and pulls like a locomotive otherwise, so I'm assuming it's normal for these bikes?

This is my first VMax - and I'm loving it. The throttle response really reminds me of my Kawi GPz1100... linear blast acceleration!!

 

[KJShover]

I have it with my bike, It's done it since day 1. Sounds to me like a quieter gear driven cam set up or a mild turbo whine.

I've had people ask me about it when I rode by. I can only hear it at lower rpms, any higher I can't hear it over the pipes.

 

[RaWarrior]

I've never noticed it on my Max, but the old GS450 auto I used to have was shaft drive, and I got a lot of gear whine from the pumpkin. Heard it was normal on it due to the gears "cut" (like how reverse sounds on a cheap car). Would start out low pitched at like 10-15mph, and whine up to 40 or 50, past that it died out.

Mine runs about 3k full choke, but I never need/use full. Typically for me about 1/2 choke instantly fires the motor, and maybe like 1/4 keeps it running at a nice 1000rpm. Once I start riding I turn it off. Running it at 3k on full choke for more than a few seconds results in the popping you describe for me as well. I always took the "popping" to be unburnt fuel flashing inside the exhaust...would make sense it would do that when running extra rich on the choke.

Mine sometimes starts popping a bit if I've been coasting down a hill for a while....the coast enrichener probably loads it up too much and starts to run rich.

 

[HarryBee]

Got tired of thelow RPM whistling... opened up the airbox, everything looked fine.
Closed it up and no more whistle!

Interesting... but I'm not complaining!

 

[dmioton]

I'm guessing I have the same sound. Sounds a lot like the Jetson's "car" when they'd fly off. I was thinking I may have an exhaust leak somewhere. Doesn't seem to affect power or anything, just a funny sound.

 

[Rhoy Carter]

I dont have a whistle either and none of the vmax;s I ride with does. I dont let miy bike get above 2000 rpm on a cold start up because the oil pressure gets way to high until it warms up good.

 

[Johnc1go]

I have the whistle on accel and louder on decel. It sounds mechanical in nature to me. I've had other bikes with a similar sound in the past.