This
image shows how I used a 1/4" flat blade screwdriver wedged in
the hole in the stainless steel cover where the Torx screw was.
Note that this is done in conjunction with wedging the screwdriver
between the outer stainless steel shield and the baffle as shown
in the image to the left. Don't use too much pressure or you
will deform the stainless steel shroud. The steel on the baffle
you are pushing against is not that strong, so do not use too
much pressure. The stainless steel shroud is not that thick,
and since this is a round hole, there are only two points where
the screwdriver will make contact, so it will be fairly easy
to ding it up if you are not careful. If you look closely, you
may be able to see a ding where the upper part of the screwdriver
blade rests against the hole in the stainless steel. It is very
slight.
This
image shows how I used the screwdriver to wedge the baffle
out by applying pressure against the stainless steel shield
and the outer wall of the baffle. The screwdriver blade is
slightly cocked because I was holding it with my left hand
and the camera with my right. Unless you bend the screwdriver
blade to grab the lower lip on the baffle, which extends
down about ½", you will have to just apply pressure
against the baffle and work it out by wedging the screwdriver
against the stainless steel shroud. Remember to alternate
wedging points 180° around this stainless steel shroud. You
may want to try to (gently) apply pressure against the mounting
screw hole every once and a while. The 1/8" pilot hole adjacent
to the exhaust hole came from a brainstorm I had after reading
a message in the 4Strokes.com Honda Forums about someone
that drilled out three or four ¼" holes tapped for a ¼" screw.
The poster said he could adjust noise/power by the number
of open holes, in effect tuning the exhaust. Stupid me, couldn't
wait until I removed the baffle. I learned that the other
side of this outer plate was blocked inside the spark arrestor
by the baffle inner friction mount when the drill bit hit
solid metal once through, so the exhaust doesn't come through
this portion. I made this hole for nothing.
Once
the baffle was removed, I put it in a ½" drill and used
a file to remove a little material off of the inner mount.
You will only need to remove about 0.001" or so. It doesn't
take much material removal to allow the baffle to slide in
and out easier. I probably used 50 or so revolutions of the
drill applying moderate pressure on the file to this inner
mount. Try inserting it every once and a while to ensure
you are not taking too much off. Now it is an easy task to
install the baffle for "stealth" mode. I just use the Torx
screw to secure it.
Remember
you should also remove the air box snorkel and if possible,
grind or file down the inner weld bead on the exhaust header.
Each pipe has this bead where each pipe mounts to the engine.
Once you remove the header pipe you will see the restriction
and understand what I'm talking about. It took 2-3 hours
with a half-round file and a lot of elbow grease to remove
(didn't have a grinding stone). You should also get a UNI
air filter with the hi-flow frame design and get rid of the
(restrictive) stock Honda air filter.
I'm still waiting for my UNI filter, but
just removing the baffle and snorkel gave me a significant
increase in power. It also reduced the off-idle hesitation
a lot. It now looks and sounds more aggressive. It's a lot
easier to keep people out of my way when they hear me coming
when I'm on the road.
If you haven't guessed, I drive somewhat aggressively. I could
not feel any difference after removing the header weld beads
(snorkel and baffle had been removed). Perhaps once I install
the UNI air filter I will see the benefit
of that mod. Nevertheless, it breaths a lot better now. A
LOT!
Credits: Article was originally written and posted in our
forums by Stuart Moss and editing by 4Strokes.com. |