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ABOUT THIS
MOD. |
TOOLS NEEDED: |
This mod will result in the following:
1. Enable the operator to switch between three
boost settings: stock mode, 11PSI and 17PSI - on
the fly!
WARNING: This mod was performed on my 2001
Volkswagen Jetta. I cannot guarantee this will
work on your vehicle. Work at your own risk.
Installation times will vary upon the
installer's experience. It took me about 20
minutes to complete this mod.
VW TECH BY:
Anthony D'Anna |

Listed below are the parts and tools necessary
to perform this modification.
NOTE: All electrical connections were
joined together by soldering.
Items and Tools Needed:
-
2 Zener Diodes (1 4.3v and 1 4.7v)
-
1 On/Off/On SPDT Toggle Switch
-
3 pieces of automotive wire approx. 8ft each
-
Wire Cutter/Stripper
-
Soldering Iron
-
Solder
-
Electrical Tape (optional: heat shrink tubing)
-
5ft. of Wire Loom & Zip Ties
T15 and T25 Torx to remove the Trim Panels under
the steering wheel (depending on switch mounting
location) |
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STEP 1. |
STEP 2. |
|
Begin by determining where you want to mount the
switch. This is necessary to plan the length of
wire you will need and also to prepare the tools
needed. For me, I decided to mount the switch
just above the radio where my turbo timer is
mounted. |


Insert the panel removal tool behind the top
and bottom portion of the fuse panel cover and
release the 4 panel clips (I used my hand for
this but a panel tool or screwdriver will work
also). Remove the cover. |
|
STEP 3. |
STEP 4. |


Remove the 3
T15 screws underneath the column panels. Pull
the left column panel straight out to release
the panel clips. |



Now remove the
T15 screw you see that was covered by the left
column panel. Insert the panel removal tool
behind the top portion of the column panel and
release the panel clip. Insert the panel removal
tool behind the right portion of the column
panel and release the panel clips. You should
now be able to remove the panel completely. |
|
STEP 5. |
STEP 6. |

On the left side
of the metal support bracket, remove the 2 T15
and 1 T25 screws. |

On the right side
of the metal support bracket, remove the 2 T15
and 1 T25 screws. You should be able to remove
the bracket completely. |
|
STEP 7. |
STEP 8. |


Locate the
unused grommet (or you may have used it for
something else already) and pull it out or slice
a hole into it. Route your 3 wires through that
grommet. |

Wires are in place
now and ready to be hooked up to the switch and
Map Sensor wires. |
|
STEP 9. |
STEP 10. |

Route the wires
through the engine bay any way you like. My path
is highlighted by the yellow arrows. Route your
3 wires through that grommet. |


Pull out the
Orange/Light Blue and Purple/Grey wires from the
loom. (Now is the time to slide your heat shrink
tubing over the wire before you make the
connections). Connect one wire to the
Orange/Light Blue wire. Connect both diodes to
the Purple/Gray wire, striped side towards the
map sensor wire. Connect each of the other two
wires you ran to one diode, each on a different
diode. Take note of which color wires are
connected to what. You will need to hook them up
correctly to the switch. Solder, heat shrink or
tape, and clean up your connections. |
|
STEP 11. |
STEP 12 - TEST YOUR CONNECTIONS. |

Route the wires to
where you will mount the switch and make the
connections. Be sure the wire you attached to
Orange/Light Blue is connected to the middle
terminal of the switch. You can mount the other
two wires on any of the other two terminals.
Keep in mind, when the switch is to the left, it
is actually clamping the the diode on the
opposite side of the switch. For example,
position 1 is actually clamping the diode on
position 3 and vice versa. Whether you are using
crimp connectors or soldering, make the
connection and either heat shrink or tape to
prevent short circuiting. |
Method #1:
Flip the switch to either side. Start your
vehicle. If the vechile does not start then you have the
diodes installed backwards. Go back to where you
made your connections at the map sensor wires
and flip the diodes around. Be sure the striped
side of each diode is towards the map sensor
wires.
Method #2: Start the vehicle with the switch in
the middle position. If the car starts ok then
flip the switch to either side. If the vehicle
begins to hesitate, rough idle, and then shut
down you have the diodes installed backwards. Go
back to where you made your connections at the
map sensor wires and flip the diodes around. Be
sure the striped side of each diode is towards
the map sensor wires. |
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STEP 13. |
JOB COMPLETE! |

Route the wires to
where you will mount the switch and make the
connections. Be sure the wire you attached to
Orange/Light Blue is connected to the middle
terminal of the switch. You can mount the other
two wires on any of the other two terminals.
Keep in mind, when the switch is to the left, it
is actually clamping the the diode on the
opposite side of the switch. For example,
position 1 is actually clamping the diode on
position 3 and vice versa. Whether you are using
crimp connectors or soldering, make the
connection and either heat shrink or tape to
prevent short circuiting. |

Your finished!
Enjoy your new mod and show all your friends
what you can do :)
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