HKS VPC Install Instructions
How to Hard Wire the HKS VPC?
Note: This tech tip focuses on the basic install of the vpc & not tuning.
Tools/Parts Required:Phillips screwdriver, 12mm socket wrench, Needle nose pliers, 10mm & 12mm flat wrench, Some zip ties, a small T, & a razor.
Here is everything that comes w/ the VPC - spent $950 w/ single turbo prom.
The stock MAF (Mass Air Flow) Sensor will be removed. Put electrical
tape on the connector for the MAF & secure it somewhere. It will no longer
be used. If you dont know where the MAF is, then you shouldnt be doing this mod!
You need to remove the scuff plate on the passengers side, one black
snap (on the scuff plate), two phillips head snaps holding the carpet down
on the kickboard. Remove the kickboard using a 12 socket (2) 12mm nuts.
Disconnect the wiring from the ecu, plug the vpc harness in...cake
This is the vpc temperature probe
This is the stock gas filter, we need to remove it & place the
temp probe here - its right next/below to the turbo pressure sensor
Here is the stock gas filter removed from the intake manifold
This fitting replaces the gas filter. Screws right in w/ no problems.
See the vaccum hose next to the fitting - this vaccum hose will be
disconnected, pull the hose from under the intake manifold, it will
later be used in a T
Now screw in the temp probe
The vaccum hose that used to be on the temp probe is out of
the picture, the nipple next to the temp probe will go to a T
explained in the pic below. The other end is explained in the
pic after the next.
The vaccum hose from the power steering is disconnected, this is
where our pressure sensor will be plumbed to. The power steering
vaccum hose (just disconnected from the nipple on the intake manifold)
will go to a T. The other end of the T will be run up the intake manifold
to the white T pictured earlier. Remember the hose we disconnected next
to the temperature sensor? This hose is connected to the 3rd part of the T
Here is a closeup of the vaccum hoses by the temp sensor.
Your vaccum hoses to the left of the T may have a different
arrangement because my EVC pressure sensor & HKS BOV
are plumbed to the stock T (far left) - so if your setup looks
different left of the white T - dont worry about it.
Here is the turbo pressure sensor connected to where the power steering
vaccum previously resided (yellow hose). See the T? The hose pointing
left is the power steering vaccum hose, the blue hose pointing up is going
to the white T pictured earlier. The black vaccum hose pointing down
is the hose off the nipple next to the temp probe. Did that make sense?
Read it a couple times slowly :-)
How to Hard Wire the HKS VPC
*The 1200 ohm resistor can be also connected from the MAF harness, much easier to install that way.
Dip Switches for the MKIV
VPC Prom for auto (AT), Stock injectors