The JECS engine management computer Subaru utilized for
the SVX is very good but the original equipment mass air
flow meter and fuel injectors don't have much capacity
beyond what is required for stock power output levels.
If we want to make a lot more power we need to change the
fuel injectors and the air flow meter. The firmware in
the ECU needs to be adjusted to enable us to do so.
We have performance chips for the SVX which are
already fine tuned for particular fuel injector and mass air
flow meter combinations. Our most popular one which is
available "off the shelf" is tuned for using the 370cc
injectors from the Nissan Skyline and the Z32 mass air flow
meter from the Nissan 300zx. These fuel injectors fit
the SVX fuel rail and the Z32 air flow meter fits the SVX
air box and "snorkus." The electrical connectors must
be changed. The Z32 air flow meter is capable of
measuring about 500hp worth of air. The 370cc
injectors are comfortably capable of delivering about 350hp
Other options include:
- Subaru STI yellow top injectors with a single Z32
air flow meter
- Subaru STI yellow top injectors with two SVX air
- 740cc Nismo injectors with a single Z32 air flow
- 740cc Nismo injectors with two Z32 air flow meters
These options are currently special order but easily
producible. We can also make custom chips for any
other reasonable injector and air meter combination.
For any custom orders your injectors, air flow meter/s, and
in dual intake setups your intake plumbing must be provided
to us for testing. We will actually install your parts
on an SVX and test everything before declaring the job done
and sending you your chip.
Installation instructions in PDF format can be obtained