Since the weather has been so unpardonably warm these days, I decided to finally get out on the tarp in the empty parking space next to mine and get this expansion chamber / muffler installed and recalibrate the CVT to take advantage of it.
An expansion chamber is a neat little exhaust hack for 2-stroke engines that causes the engine to burn more fuel/air mixture on each stroke, giving you increased power (and decreased gas mileage, but what can I say, I'm a fashion of slavery). Read about how they work here, and look at an informative animation of one in action here.
This HOWTO will illustrate how to install the Racing Service Zero Super Euro Chamber Corsa on my 2006 Yamaha Jog ZR Evolution.
The particulars should be the same for any late-model (2000 or newer) Jog, and the concepts and procedure should be the same for any Japanese scooter.
More after the jump... (i.e. click "Read more" below!)