GFB Deceptor Pro II (part T9504) - Manual (Page 2)

Valve Installation
The Deceptor Pro II (part # T9504) is designed as a direct replacement for the factory bypass
valve on Nissan 200SX/Silvia S14-S15 models with the SR20DET engine. It mounts onto the
lower half of the factory bypass valve so that it fits in the factory location. You MUST have the
factory bypass valve and associated hoses in order to fit this valve.
1) Unclamp the battery and remove it. This will
make access much easier, but before doing so
check that it will not affect any aftermarket
alarm, stereo or other electrical accessories.
2)
Loosen the two hose clamps on the factory
valve shown opposite, and the hose clamp on
intercooler end of the BOV feed hose. Using a
10mm socket, undo the two mounting bolts
holding the factory valve to its bracket. The
second bolt is much easier to undo if the rubber
recirc hose is removed from the valve and bent
out of the way.
3) Remove the vacuum hose from the top of the
factory valve (this hose is a tight fit, try using a
flat screwdriver to push the hose off, rather than
pulling it).
4)
Pull the plastic feed pipe off its fitting on the
intercooler pipe so that the factory valve and
plastic pipe can be removed as shown.
5) Remove the factory valve from the lower
elbow by undoing the 3 Phillips head screws
on the underside of the flange. Position the
Deceptor Pro II onto the elbow, ensuring that
the orange factory o-ring found between the
valve and elbow is used, and the locating pin
and matching hole on the BOV flange line up.
6)
Rotate the Deceptor Pro II so that the recirc
outlet points in the same direction as it does on
the factory valve, then use the factory screws
to clamp it firmly to the flange.
7)
Replace the assembly back into the factory
position in the reverse order of removal,
and double-check all hose clamps.
8)
Now is the time to run the cable from the
control box to the Deceptor Pro II valve,
making sure to secure it along the way so it
cannot be damaged. Re-install the battery
and test the controller.