THOR Racing
24-06-03, 13:19
TRL Performance: VFCC (Voltage Fuel Cut Controller)
Installation can be found at
http://www.trlperformance.com/vfcc.html
Setting up the VFCC.
1. Flip up the lid to the VFCC.
2. Orientate the box so the following is true;
a. The dial on top left (Marked “F.C”) which should
be set at position 8 as default is known as the
“Fuel Cut” threshold dial.
b. The dial on top right (Marked “o’boost”) which
should be set at position B as default is known
as the “OVERBOOST” threshold dial.
(The default settings are for a Toyota Supra 3.0lt TT)
3. Set your boost controller to the desired boost level
for the car. E.g. 1.1bar
4. Rotate OVERBOOST dial to position “F” to raise
the OVERBOOST level to the highest point.
This is a measured 4.99V from the vehicles MAP
sensor, equivalent to the maximum output level
the MAP sensor can generate.
Setting the FUEL CUT
(By default this is set to position 8 = 4.2V which is for the Supra TT)
5. With the “Fuel Cut” dial set at position 8,
drive the car and see if you experience fuel cut.
Then…….
a. If it does still hit fuel cut rotate the “Fuel Cut” dial
ANTI-clockwise (to position 7 from 8 for example)
and try again. Keep doing this until fuel cut is removed.
b. If it does not hit fuel cut rotate the “Fuel Cut” dial
CLOCKwise (to position 9 from 8 for example) and
try again. Keep doing this until fuel cut comes back
again. At the point where you hit fuel cut you know
that the previous position was just right. (i.e. rotate
the dial back, anti-clockwise, one position))
6. Setting of the FUEL CUT threshold is now
complete.
This is the setting to be used for all cars of this
type. (e.g. most Toyota cars have a setting of
8 or 9 as 4.2V is the fuel cut trip voltage to the ECU)
You will observe that a small green LED (rectangular white blob) in bottom left hand corner, will illuminate if the VFCC is operational. i.e. is removing fuel cut. Boost pressure has to be above the factory fuel cut level for the device to activate. So you should NOT see any LED’s illuminated during idle.
The LED’s might be hard to see so get someone else to shade the sunlight from the box and observe whilst you drive.
You should NOT observe the RED LED (again a white rectangular blob) in the bottom right hand corner illuminating.
Setting the OVERBOOST
7. Now set the OVERBOOST dial.
(ONLY IF YOU REQUIRE THIS FEATURE)
(For the Supra leave this as is for 18.5psi)
The overboost is a safety feature of the VFCC to
enable you to re-introduce the fuel cut at a higher
level. So you still get the safety of knowing the ECU
will hit fuel cut should something fall off the car or
the turbo control mechanism fails.
8. Rotate the OVERBOOST dial ANTI-clockwise
(from F to E) and again go for a drive.
9. IF you now hit fuel cut, rotate the dial one click
clockwise (Maximum F, do NOT rotate from F to 0!).
You have now set the maximum boost you will allow
before fuel cut will be reintroduced.
i.e. if you boost higher than that set by the boost
controller the safety feature will activate.
10. If you do NOT hit fuel cut, goto 8.
If you observe anything different to the above please contact Peter Betts at TRL Performance on 07802 412969
Installation can be found at
http://www.trlperformance.com/vfcc.html
Setting up the VFCC.
1. Flip up the lid to the VFCC.
2. Orientate the box so the following is true;
a. The dial on top left (Marked “F.C”) which should
be set at position 8 as default is known as the
“Fuel Cut” threshold dial.
b. The dial on top right (Marked “o’boost”) which
should be set at position B as default is known
as the “OVERBOOST” threshold dial.
(The default settings are for a Toyota Supra 3.0lt TT)
3. Set your boost controller to the desired boost level
for the car. E.g. 1.1bar
4. Rotate OVERBOOST dial to position “F” to raise
the OVERBOOST level to the highest point.
This is a measured 4.99V from the vehicles MAP
sensor, equivalent to the maximum output level
the MAP sensor can generate.
Setting the FUEL CUT
(By default this is set to position 8 = 4.2V which is for the Supra TT)
5. With the “Fuel Cut” dial set at position 8,
drive the car and see if you experience fuel cut.
Then…….
a. If it does still hit fuel cut rotate the “Fuel Cut” dial
ANTI-clockwise (to position 7 from 8 for example)
and try again. Keep doing this until fuel cut is removed.
b. If it does not hit fuel cut rotate the “Fuel Cut” dial
CLOCKwise (to position 9 from 8 for example) and
try again. Keep doing this until fuel cut comes back
again. At the point where you hit fuel cut you know
that the previous position was just right. (i.e. rotate
the dial back, anti-clockwise, one position))
6. Setting of the FUEL CUT threshold is now
complete.
This is the setting to be used for all cars of this
type. (e.g. most Toyota cars have a setting of
8 or 9 as 4.2V is the fuel cut trip voltage to the ECU)
You will observe that a small green LED (rectangular white blob) in bottom left hand corner, will illuminate if the VFCC is operational. i.e. is removing fuel cut. Boost pressure has to be above the factory fuel cut level for the device to activate. So you should NOT see any LED’s illuminated during idle.
The LED’s might be hard to see so get someone else to shade the sunlight from the box and observe whilst you drive.
You should NOT observe the RED LED (again a white rectangular blob) in the bottom right hand corner illuminating.
Setting the OVERBOOST
7. Now set the OVERBOOST dial.
(ONLY IF YOU REQUIRE THIS FEATURE)
(For the Supra leave this as is for 18.5psi)
The overboost is a safety feature of the VFCC to
enable you to re-introduce the fuel cut at a higher
level. So you still get the safety of knowing the ECU
will hit fuel cut should something fall off the car or
the turbo control mechanism fails.
8. Rotate the OVERBOOST dial ANTI-clockwise
(from F to E) and again go for a drive.
9. IF you now hit fuel cut, rotate the dial one click
clockwise (Maximum F, do NOT rotate from F to 0!).
You have now set the maximum boost you will allow
before fuel cut will be reintroduced.
i.e. if you boost higher than that set by the boost
controller the safety feature will activate.
10. If you do NOT hit fuel cut, goto 8.
If you observe anything different to the above please contact Peter Betts at TRL Performance on 07802 412969