Having owned my C50 for two days now I'm not smart on the details of the Suzuki fuel injection, however most bikes don't have "smart" systems like in our cages which can truely change fuel patterns based on onboard sensor data. The two HDs I've owned with fuel injection do not have an air sensor in the intake, nor an oxygen sensor in the exhaust to allow it to adjust to many changes. This makes the amount of air allowed into the engine the most critical portion of the equation of fuel/air mixture.

The FI system squirts a set amount of fuel into the bike based on a "known" intake restriction and the programming sets the mixture for various throttle positions. When you increase the air flow (like with a high-flow performance air cleaner) you increase the amount of air however, the FI system is still squirting the same smaller amount of fuel required to run with the restricted stock air flow. This increased air flow with stock fuel metering results in a lean mixture. Lean mixtures burn hotter than normal and can do damage if run over an extended period of time.

The fix in the HD world is to increase the amount of fuel being squirted and return the fuel/air mixture back to normal. The ECM computer controls this "squirt" and you have to either download a "Stage 1" upgrade computer flash (done at the dealer) or install an aftermarket computer controller to modify the stock signals generated by the bike's stock computer.

Sorry for the long post, however now to the topic... From all my "other bike" experience, opening the exhaust restrictions will give you better sound and will change the backpressure the motor feels. This backpressure is needed to some extent to allow the motor to make it's HP & torque in desired RPM ranges. Some motors are more sensitive to changing the backpressure while others run just fine. For the most part exhaust mods alone (within reason) will not require a different computer "flash" or upgraded FI controller. However, to feel the full effect of increased HP & torque you will need open up both the intake and exhaust. Increasing the intake airflow will definately require a change to the computer's input of fuel to this now greater volume of air.

I believe K&N has an "increased flow" air cleaner for the C50 and Power Commander makes a computer controller for the C50. Decrease the airflow restrictions, both coming in and heading out of the motor and then tell the computer to match the fuel and HOLD ON!!

Edmo

 

hmm...i guess I havent noticed any change except sound...I guess time will tell..happy I did it

 

yes

 

Would'nt be easier if I just drill holes in the back plates??

 

well you could, but it doesnt do anything with the actuall baffle.

 

Can I keep the baffle & only drill holes?? Would it be any louder?

 

drileed mine out sounds louder but not exactly what i want cant get the video

 

highlight and copy then paste the vid link in Internet Explorer

it will open and play with Internet Explorer
any other browser seems to play up (opera/mozilla.ect )

 

not really a computer guy walk me through?

 

HI Ron

at the end of the link
hold down your Left mouse button

drag it to the front of the link

let go of the left mouse button

the link will be highlighted

on the highlighted link Click your Right mouse button
and click Copy
then in an opened Internet Explorer window
in the address bar (along the top )
right click and Paste the copied link

then click submit
the link will then open for you
i hope this explains it better for you


i decided to Only drill my pipes
with 8 holes
Candy sound's Just brilliant
a sweeeeeeeeeeeetttttttttt deep sound
enough to be definatley heard loud rumble
but not so loud to give me a headache