Mazda RX-7 Fuel System
THE FUEL SYSTEM
Is the most important part of the horsepower equation. It is also the
most overlooked and misunderstood. If you want your motor to last, then
you must have enough fuel to support the horsepower level that you want
to achieve. We offer custom fuel systems for each application. We pride
ourselves on doing the job only once. The rotary engine needs a lot of
fuel to survive. Do you want to try to save a few dollars, or to do it
right the first time?
For those who need big horsepower , you also need larger fuel injectors.
We offer these larger injectors in several ways. We have some drop-in
replacement larger injectors for some applications. Others require a modified
fuel rail to allow for the larger injectors.We offer these custom fuel
rails. Please call for information.
Fuel pump flow ratings should be taken at 40-43.5 psi of fuel pressure.
That gives you an accurate rating of the horsepower level that each pump
is capable of. Many places rate their fuel pumps at a very high fuel pressure.Claiming
that a pump will flow enough for 500hp (while
at 90+ PSI of fuel pressure! )That is way too much. We have
all of the flow charts for pumps that we sell. Just ask.
An adjustable raising rate fuel pressure regulator is another important
part of the system.This will compensate for boost in turbocharged cars.(It
gives you a 1-1 ratio of boost psi and fuel psi increase) We also sell
an adjustable rising rate regulator (R.R.R.) which will add more fuel
per pound of boost (sometimes up to 4-1 ratio) to allow you to run higher