About your FiTech Go EFI System
CONGRATULATIONS on your purchase of the
FiTech EFI System
!
The
Go EFI Classic
System will bolt directly to any 4-BBL Intake Manifold.
To fit on a spread bore 4-BBL manifold requires an inexpensive
adapter plate to avoid leaks. Suitable adapter plates are available
from several suppliers such as Summit Racing. Your existing distributor
and, if so equipped, ignition box functions as before and controls timing.
The
Go EFI Classic System
is self-tuning once the initial setup is
performed using the hand-held controller. When the necessary initial
inputs are made with the hand-held controller the
Go EFI Classic
System
creates a base fuel map to get the engine running.
Then the self-tuning programming will fine tune the map to produce
optimum power and
performance. Through the use of a Wide Band O
2
Sensor the system can continuously make adjustments in the fuel
delivery to provide the correct air/fuel ratio under all climate and
altitude conditions. Several sensors are also integrated in the throttle
body assembly including the Throttle Position Sensor (TPS), and the
Manifold Absolute Pressure Sensor (MAP). The Wide Band O
2
Sensor is
installed into the exhaust pipe. This system is de-signed with safety in
mind and has a self adjusting “limp home” mode. It also has a data
logging feature to track what is going on with the system while it is
running, to ensure optimal performance.
Special instructions
Make sure that you remove ALL low pressure hoses, fittings and clamps
on factory fuel lines and replace them with EFI rated fuel hose. Also the
use of proper flared connections and clamps is a necessity. Be careful
not to mix 45° and 37° AN fittings, they look similar but will not work
together. 45° fittings usually come from a hardware store or auto
parts store while 37° AN fittings are the ones supplied by
FiTech
and
most speed shops.
•
Cranking fuel and hard throttle hits (accelerator pump) are tuned
by the user. Selecting the right "cam" and engine CID (
Cubic Inch
Displacement
) during setup will get the learning closer. Cruise and
wide open throttle (WOT), mixture (trims) are continuously learned
and tweaked by the system.
•
The
Go EFI Classic System
needs an external fuel pressure
regulator set at 58 PSI.
A ag-Surge
containing a high pressure pump
and regulator
is
available
(PN 40009)
.
This serves as a fuel pressure
amplifier
and
is
fed by a low pressure mechanical
/elctric
pump.
Always turn off ignition and allow at least 15 seconds
for
ECU to save if disconnecting battery
The
Go EFI Classic System
s are intended for use with unleaded
pump gas. The system is compatible with E-85, but this requires
advanced tuning knowledge. Maximum horsepower fueling capacity is
reduced by approximately 30% with E-85. Fuel system components
should be E-85 compatible and in new condition to prevent sludge from
breaking loose.
•
The
Go EFI Classic System
is designed to be used with street
based
ignition systems:
Summit Racing® Multi-Spark Digital CD
Ignition,
MSD
D
igital 6AL
, MSD S
treet
F
ire, etc. It will not operate with
race oriented
systems such as MSD digital 7AL, 7AL-2, 7AL-3 and 8-
p
lus.
•
This system is NOT smog legal.
•
The
Go EFI Classic System
comes with pre-installed 66-lb flow
injectors and is
capable of handling up to 500 hp.
•
Please refer to ignition system’s instructions as some features may
need to be altered for proper operations of the EFI System. The
Go
EFI Classic System
does not control timing, but depends on the ignition
timing curve to
be correct for optimal throttle response.
Very important note: Your fuel tank must have a vent
to prevent pressure building up inside the tank.
Engine Protection Feature
The
Go EFI Classic System
is programmed with a limp home mode.
This feature does not shut down your system, instead the ECU is
designed to compensate if a sensor fails. This means, that if for any
reason a sensor fails, that sensor will receive either a default value or a
simulated value. This is to ensure that the engine remains running in a
safe and controlled manner so that you can get to a repair facility, or to
your home, to resolve the issue. Due to the compensation features of
the ECU, the way to check if something is going wrong with your
system, is by the fault
codes option on the main menu of your hand-held controller. The fault
code comes up under OBD-II, diagnostic standard, but to the right of the
code it will state which sensor is having the problem. A new feature
programmed into the hand-held is a rev offset. This feature will protect
the engine from long term abuse because it lowers your built in rev limiter
enable to prevent over revving and possible engine damage during warm
up. It will automatically turn the feature off once your engine reaches
operating temperature.
Determine the engine's need for vacuum ports including
ported and manifold vacuum. These ports cover accessories
such as power brakes, vacuum advance, transmission
modulator, PCV and possibly more. There are two 3/16" male
nipples and three 3/8" male nipples. See figure 1 and 2 for
location and use of various vacuum nipples.
Determining Use of Vacuum Ports
T
his 3/16" nipple
will provide timed
(ported)
vacuum
This 3/16" nipple
will provide full
manifold vacuum
Extra 3/8" nipple for other
vacuum accessory or cap if
not needed.
Figure 2
Very Important Note:
Your fuel tank MUST be vented to
prevent pressure from building up
inside the tank.
2
A
