Fuel Cut Controller Installation

Installation of the VFCC Fuel Cut Controller

The VFCC is a product designed and distributed by TRL Performance

First you need to get to the ECU of the Supra MkIV Twin Turbo.
Now follow the VFCC install diagram and the instructions below.
On the upper connector B pin 62 there is a black and yellow stripe wire which is the MAP sensor wire. Just cut it giving you room to connect the wires of the fuel cut onto, about 5cm from the connector.
Connect the loom side to the INPUT to the VFCC and the ECU connector side to the OUTPUT of the VFCC.
Splice the +12V supply to the VFCC onto the wire shown on the diagram.
Splice the 0V to the wore shown on the diagram or to a good chassis ground.
(I used the middle 10mm bolt holding the ECU down)

That's it.

Now put it all back together following the reverse instructions to getting to the ECU. You'll probably find the small plastic loom cover won't go back on so just throw it away. Hide the VFCC box underneath the gearbox control unit, it just fits underneath at the top.

Note:
The VFCC's supplied by TRL are set to RAISE the FUEL CUT NOT REMOVE IT

They have an overboost threshold (i.e. a raised fuel cut limit) setting of about 18psi. If you wish to boost beyond this the overboost cannot help as you've run out of range on the stock Toyota MAP sensor. This can be lifted and removed altogether, if you need to know how contact me.

It's a bit hit and miss as the stock MAP sensors do seem to vary a bit towards there upper limits so let me know if you would either like a rasied fuel cut threshold or it removed completely. It's the same box so nothing extra to buy. Just turning a screw is all that's needed.

And finally the VFCC is the same model for the UK, Japanese grey import and also the VVTi model.

For further assistance and prices regarding the VFCC fuel cut contact TRL via Email at vfcc@trlperformance.com