My electrician [jameson] and radiator guy [jorge] installed the turbo gauge yesterday. It took just about an hour.

I used brake a caliper bleed screw as a fitting to connect the air hose to the intercooler tube. Mura lang ito. Mine was just something lying around in a drawer at GlennSter's auto supply.
Jorge drilled a hole in the intercooler exit pipe (between intercooler and intake manifold) then welded the fitting on.
Jameson ran the air plumbing to the cabin and protected it with wire dressing ('spaghetti')
I bought a gauge pod from Maizone Banawe (Php 200.00)
Total labor for the install (SRP 500.00 or so)

Some reminders.
You need to use the plastic t-fitting for this particular gauge. Otherwise the air turbulence will give an erratic reading.
The gauge costs less than Php500.00 at GlennSter's shop (G&S Auto Supply Kamias cor. Kalayaan Q.C.). They also have other gauges there (vacuum, volts, temp, etc.) but they don't sell the gauge pods.

What the gauge looks like


IC pipe removed:


Installing the fitting: