What do you need?

A 10k ohm resistor. 1/4 or 1/2 watt rating
two pieces of thin insulated wire. 18‑22 guage is fine (telephone type)
soldering iron
solder
black tape or heat shrink

How Do you do it?

Solder the two pieces of wire to the ends of the 10k resistor to make the leads longer.
Fold one end over so both wires are beside each other. Careful not to let the resistor leads touch.
Cover the whole thing in black tape or heat shrink (prefered) leaving the two wires exposed.
Force the exposed ends under the ICP plug's rubber seal and expose a little of the copper
wire from the insulation of your resistor pack. Fold the copper wire over and insert into
two of the three holes. Blue with Green stripe and Grey with Red stripe are the wire
colors on my truck of the holes I used.

So what does it do?!

It tricks the computer on the truck to supply a higher pressure to the injectors
effectively giving the fuel a little extra kick into the cylinder.
On a completely stock truck, it should be good for about 30HP and 100 lb/ft of Torque
If you have any chips or tuners, the effect will be slim to none as the ICP is already
being modified by the chip/tuner in most circumstances.

 

Did these on my 94 with stock injectors, and didnt get much of a gain. When i put stage 2 injectors on it, probably 50hp gain. didnt dyno with it on and off. just my guess