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Total
Performance Intake (TPI
Valve)
 
The
TPI Valve is designed
to increase air flow into your air box and carburetors.
Racers
and tuners as well as many trail riders have known for many years that
opening up the air box in order to flow more air makes more horse power.
This is usually called �ventilating� or �gutting� the air
box.
They also know that more air means that the engine will be running
leaner exactly the same as installing a smaller main jet.
Only
one thing was missing, and that was the ability to go back to the richer
jetting required for colder weather or lower altitudes.
What did they do about this?
They tried to tape or stuff foam rubber in the openings they had
created.
All of this was very messy and imprecise.
Much of the time they were either too rich or too lean or they had
to start changing main jets in order to be jetted correctly.
There
must be a better way?
There is!!
It�s called a TPI valve.
The TPI Valve can be opened completely to the leanest position or
closed completely to the richest position or any position in between.
The
TPI Valve gives you a range of two to four jet sizes of adjustment
providing you use the recommended number of valves in your air box.
For
more information on airbox modifications, read: Airbox,
Friend or Foe?
The TPI "Knobby" Valve is 1 1/2" diameter
and 1 1/2" high.
The TPI "Low-Boy" valve is a flush
mounting version which is 2 5/8" square overall.
TPI Valves come with filters.
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Total Performance Intake Valve |
| Part
No. |
Description |
M.S.R.P. |
|
|
| TPI-1K |
Package
of 1 Knobby - with Filter |
$19.95 |
| TPI-2K |
Package
of 2 Knobby - with Filter |
$39.90 |
| TPI-3K |
Package
of 3 Knobby - with Filter |
$59.85 |
| TPI-1L-BK |
Package
of 1 Low-Boy - Black with Filter |
$19.95 |
| TPI-2L-BK |
Package
of 2 Low Boy - Black with Filter |
$39.90 |
| TPI-3L-BK |
Package
of 3 Low Boy - Black with Filter |
$59.85 |
| TPI-1L-BU |
Package
of 1 Low Boy - Blue with Filter |
$21.95 |
| TPI-2L-BU |
Package
of 2 Low Boy - Blue with Filter |
$43.90 |
| TPI-1L-GN |
Package
of 1 Low Boy - Green with Filter |
$21.95 |
| TPI-2L-GN |
Package
of 2 Low Boy - Green with Filter |
$43.90 |
| TPI-1L-RD |
Package
of 1 Low Boy - Red with Filter |
$21.95 |
| TPI-2L-RD |
Package
of 2 Low Boy - Red with Filter |
$43.90 |
| TPI-1L-YW |
Package
of 1 Low Boy - Yellow with Filter |
$21.95 |
| TPI-2L-YW |
Package
of 2 Low Boy - Yellow with Filter |
$43.90 |
| |
|
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| TPI-T |
Cutting
Template for Low Boy TPI Valves |
$4.00 |
  
Arctic Cat Knobby
Polaris Knobby
RX-1 Low Boy
Technical Article published on TPI Valves:
Knobby Valve
Low-Boy Valve
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