THE LASER PRODURO MUFFLER
MODIFICATIONS!!!
As mentioned before, the bike comes with a nice set-up and unless you are up to serious over-land travel on tougher road conditions or seeking for more power, there is no need for big modifications on the stock set-up. If one likes to play around however, and working a bit on bikes to adjust it to individual needs, personal taste, then I hope this thread ill become a useful source.
THE LASER PRODURO MUFFLER
The bike sounds rather like a household lawn mower than a motorcycle. The stock exhaust looks and is heavy (around 12kg) and it seems, that the bike needs a bit more “air-flow”. The bike is fuel injected and comes with a catalytic converter – hence the weight.
http://pfaelzer.smugmug.com/Motorcyc...68_GBtkC-L.jpg
The stock pipe will to go first.
http://pfaelzer.smugmug.com/Motorcyc...22_uCqQk-L.jpg
In goes the Laser Pro Duro – off-road version.
http://pfaelzer.smugmug.com/Motorcyc...41_HGBN7-L.jpg
The original muffler is welded to an extension pipe. I didn’t want to cut off the pipe and use it for the new muffler so a new pipe had to be made.
http://pfaelzer.smugmug.com/Motorcyc...94_gFR85-L.jpg
To fit the Laser I needed to rebuild this stainless steel pipe. Due to different diameters between pipe and Laser can I had to make an adaptor – also in stainless steel. The biggest challenge on this project surely was, getting the stainless steel pipe bent to fit correctly through the frame, where at some spots is not much room for variation. It took some trials to get this right.
http://pfaelzer.smugmug.com/Motorcyc...21_6H2im-L.jpg
The whole assembly looks like this. Only one holder of the extension pipe to the frame, close to the adaptor is not yet welded on. I made a second ring-holder for the muffler and small latches to fit to the frames fixing points.
http://pfaelzer.smugmug.com/Motorcyc...89_D2ygy-L.jpg
First look with the Laser on the bike. Some holders were added to fit to the bike’s fixing points at the frame.
http://pfaelzer.smugmug.com/Motorcyc...68_JTXZA-L.jpg
http://pfaelzer.smugmug.com/Motorcyc...34_eHxvy-L.jpg
The new look. I like it. It looks much lighter than before. One more motivation to change the stock pipe is my plan to put on some aluminum panniers. The Laser reduces the total width so I can bring the boxes closer to the bike later.
RIDING EXPERIENCE WITH THE NEW LASER
First of all – now it sounds much more like a real motorcycle. It is louder but for my taste not too loud especially on low and mid range rpm. I like it. The ride surely feels more powerful. In neutral twisting the throttle give a much faster raise in rpm than with the old system. Acceleration is better. It feels sportier. On the downside, like with many after market cans, the engine backfires a bit when turning the throttle off quick. It is not too much disturbing and raises awareness of others in the traffic (!). This can be a safety factor when riding in China. I will address this issue later when I bring the bike for a bigger service to Jialing factory. I hope they can adjust this issue by working on the ECU unit.
Next thing will be to take a look at the air-filter.
AW
Back to overview
Re: THE AIR FILTER AND BOX
Phaelzer,
Looks like you're doing up the bike real nice! Nice clean photos too. The laser exhaust looks great and I'm sure the weight reduction has a positive effect on the acceleration and handling. Does it feel less top heavy with the pipe off?
Looking at the plain rectangular shape of the air filter, I wonder if there are K&N filters that would drop in without much modification. That would certainly save you from having to re-use the filter frame every cleaning. After all that, the ECU will definitely need remapping to get rid of the decel popping and maybe squeeze a bit more out of the top end. Do you happen to know what kind of interface the ECU uses for programming? Changing the mapping yourself may be faster than relying on the factory to do it.
CC