VS1400 Intruder Exhaust Mod

Drill Your Pipes For Maximum Sound & HP

See NOTES Below for VS1400/S83

ADDENDUM: In order to drill the 6 holes outlined in step 2, it will be
neccessary to angle the drill bit a little. If you can't do this easily,
then I recommend you just drill 3 holes in the second baffle instead
of 6. There really isn't a noticeable difference either way.

On most modern bikes, the EPA dictates a certain level of exhaust emissions and in order to achieve
these low levels, bike manufacturers have to set up the bikes so that they burn very lean
(lots of air, and just a little fuel). Consequently, when you replace the stock factory mufflers...
or when you drill thru the stock mufflers, the bike breathes a lot better, which means it now can draw
even MORE air thru the carbs. The problem with this is that if we start with a lean condition to begin with,
and then we add even more air... the bike then runs TOO lean and TOO HOT... and we take a very real
chance of destroying the engine in a VERY short length of time unless we immediately take steps to
increase the amount of fuel we feed the carbs with all this extra air we are pumping into the engine.


NOTE: If you choose to drill the exhaust on the VS1400,
do NOT perform Step 3 or Step 4
from the above diagram as the bike will not run correctly.


In Step 1 on the VS1400 Intruder I used 4 holes between the rivets and then
drilled 4 more holes straight through for my Step 2. Rejetting may or not be
needed on the VS1400 Intruder if you drill the stock exhaust. Minimun
recommendation is the turn the carb adjustment screws for each carb so they
are a Minimum 2 & 1/4 to 2 & 1/2 turns
out to decrease the possibility of a lean condition. If popping on decel
persists re-jetting is recommended.

Some of this information and the Diagram could originally be found @
Miss Vickie's House of Ill Repute,
I've placed it here due to numerous requests.

The Information on the VS1400 Intruder is based on
My Personal Experience

Your experiences may not perfectly match mine. As usual judge the risks
you are willing to take & exercise your own judgement
before performing any modification.

There is a lot of useful information on this site, but errors are possible
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Helpful answers are $1.00 each dumb looks are still FREE
These Tips come from many people, on the various
motorcycle forums I frequent.

If You Attempt Modifications & Ruin Your Motorcycle
It Is Your Problem.
If You Are Not Mechanically Inclined,
Get Help From Someone Who Is
I Am Not Responsible For Use/Misuse Of These Tips & Tricks
Use @ Your Discretion

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