- Plug & Play (no cutting
or splicing required)
- Weatherproof factory connectors
- Heavy 10 gauge automotive-grade copper wire
- Heavy-duty 40 amp weatherproof relay
- Weatherproof fuse holder
- Alternator-direct power for
maximum pump performance
- Silicon grease, spare fuse,
wire ties included
- Stainless steel mounting hardware
- Compatible with various pump boosters (i.e. KB, MSD) (optional)
- Key-off fuel pump power jumper
and drainage kit (optional)
Why use a Racetronix Fuel Pump Upgrade Harness?
power for maximum voltage / True PnP with GM type connectors:
Racetronix PnP upgrade harness provides alternator direct power for maximum
pump voltage. Racetronix has documented an
1.2-1.5V increase in pump voltage in the C5 which equates to a 15-18% increase
in pump volume based on Walbro's
and Racetronix field tests. A minor increase in fuel pressure will actually
be experienced with the installation of this
The harness is fully 'plug and play' and is installed without cutting into
factory wiring. The entire harness is weatherproof
with the same Delphi interconnect components used throughout your C5. The
harness' operation is quite simple. The factory
wire which was once used to power the fuel pump is used to trigger a 40
amp-rated relay which in turn supplies
directly from the alternator with fused protection.
grounds = improved voltage & reliability:
ground is provided which loops into the harness. This loop enhances ground
to the factory harness making a two-fold
A secondary ground for the fuel module is also provided. This enhances
the ground at the pump's source and through the fuel module's body. (see
Racetronix harness is equipped with an intermediate high-current (30 amp)
connector just after the relay. This allows for easy
& play addition of a pump voltage booster which can increase pump performance
upwards of 30%. A spare connector
set is included so that any booster can be adapted to plug into the Racetronix
harness. The Racetronix harness further
pump booster performance by eliminating voltage drop. The heavy 10 gauge
power feed is more than capable of
the 15-20 amp loads generated by the pump at boosted voltages.
Pump Drain & Power System (optional C5-FDK)
wiring harness is included with this system which allows the in-tank pump
to be powered up without the vehicle running.
can be used to help drain much of the fuel from the tank before undergoing
replacement of the factory pump or to drain race
from the tank at the track. Simply install the Racetronix upgrade harness,
unplug the intermediate pump booster connector and
this drain harness in. Attach the alligator clip to the back of the alternator
+ or battery + to supply power. The harness is fused
your safety and is assembled with fuel resistant wire. A length of clear
vinyl hose with gear clamp is included which is attached to the
module's 'black' outlet port to aid in draining the tank.
is nothing worse than being in the middle of an installation only to find
that the manufacturer has skimped on installation hardware. This is why
Racetronix supplies a spare ATC fuse, 25 black nylon wire ties, silicon
grease and stainless mounting hardware with each kit.
Racetronix harnesses are
considered the best by which all others are judged. Attention to detail
in every Racetronix harness is evident at first glance. Racetronix spares
no expense to ensure reliability, ease of installation and performance.
All Racetronix harnesses
are assembled using our computerized crimp-quality monitoring system and
then circuit checked for the utmost in reliability. This Racetronix harness is backed by our limited lifetime warranty.
Racetronix fuel pump in this system is capable of supporting apx. 600RWHP
@ 0.5 BSFC @ 58PSI (400KPa) using factory lines. In early model C5's with
rail-mounted fuel pressure regulators the above HP support can be achieved.
Addition of a pump voltage booster may increase support to apx. 700RWHP.
Cars with superchargers, turbos and low battery voltage may see lower HP
model C5's with the returnless rail system will not be able to achieve
this level of HP support with the fuel system alone.
is because the point of regulation is at the back of the car. The location
of the FPR does not allow it compensate for line
drop even though the pressure is stable at the back (regulator location).
There are two options to get around this problem.
is to convert the system to a rail mounted FRP return type (best). The
second option is to install a pump booster which is
at the point where rail pressure starts to drop. The boost in fuel volume
overwhelms the regulator / return line thereby
the fuel pressure at the back of the car which translates to higher pressure
at the rail. We recommend the MSD unit for
applications as it ramps the voltage based on manifold pressure. This prevents
a short but abrupt fuel pressure spike which
the motor to hiccup from brief over-fueling. If you are using an instant-on
N2O system then the KB BAP can be considered as well.
understand that this is not an issue with the Racetronix system but rather
a design limitation of the factory configuration.
C5 Corvettes can be checked for compatibility with the Racetronix fuel
system. If your access port for the fuel module can be seen in front of
the driver's side rear tire (under the car) then this system will work.
If it is not visible then you have the new type of module which goes in
from the top of the tank. The Racetronix system is not compatible with
this fuel module / system. If you are not sure please have a qualified
person check before ordering your system.