how do you know if your jetting is tuned in correctly if

you dont have dyno..

seems to run fine--i guess-- but is there any real way to tell?

 

do timed runs, the jetting with the fastest run is where u want your be...

 

If you bog out with slow acceleration = too rich. Spark plug could be black or very dark brown.

Popping and or backfiring with high temps = lean. Spark plug could be white on electrode.

 

how about if you come to a quick stop, my bike stalls alot when i stop real fast?

hey bajaxrider,

i see in your pics you have a black end cap, but list a hmf slip on-- made the switch any difference..

the black end cap looks good..

 

chirochris,
I put the HMF pipe on for riding at silver lake, spark arrestor needed, and possible sound check.

End cap was louder, but I have been very happy with the HMF pipe.

I like being able to change to the quite core in less than 2 minutes if I need to quite her down.
Running just the spark arrestor with out the quite core and I get plenty of low end torque, this is the way I like it, but it is a little on the loud side when I am above 4,000 RPM's. [img]i/expressions/face-icon-small-smile.gif[/img]
The HMF pipe has great flow and sound, my jetting stayed the same as when I had the endcap on.

 

make sure you start with a clean filter to do the jetting.