Getting more of a rumble out of a 450

[bakirkwold]

I want my bike to be louder. I do not want an aftermarket exhaust. I have a stock air box and exhaust. Has anyone drilled 2 or 4 small holes in the end of the exhaust? Did you have to re jet? Any other mods available?

[pete]

Well... I went the custom route which solved that problem

However, anything you do to the exhaust that results in flowing more exhaust gases will likely result in a need to rejet...

I can't remember but is your exhaust in good condition? If so, it may be better to offload it to someone looking for a stock exhaust so you can get yourself a freer flowing 2 to 1 or something...

[bakirkwold]

Yes it is. I think I will leave it for now.

[UncleMike]

You want your bike to be louder? Rev it higher.

[pete]

Yes it is. I think I will leave it for now.

I would... you might end up finding someone wanting the opposite and can do you a deal for something that works better for you

[850 Combat]

In the State of Maine, drilling holes in the exhaust will prevent your machine from passing inspection, so my local inspection station has informed me.

[snark]

I want my bike to be louder. I do not want an aftermarket exhaust. I have a stock air box and exhaust. Has anyone drilled 2 or 4 small holes in the end of the exhaust? Did you have to re jet? Any other mods available?

I drilled mine out...the three little fake holes in the back of the cans. It helped a little. Got a bit better sound and runs a little stronger...still with stock jets.

Don't expect a V-Twin rumble though...

[1_v8_merc]

I did that on my 650, bad idea...I ended up welding it back up!

I lost a lot of power, especially top end.
It caused a lean condition too.
It only sounded good at certain RPM's, and sounded like a Farty dirt bike the rest of the time.

Not sure about the 2 bangers, but the 4 cylinders, you need a re-jet.

[snark]

I got mine to sound a little like a Triumph...which was a bit better.

[pete]

I probably should try and get a decent sound bite from mine one day... not that it will help anything in this thread