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assistant operate the gas pedal multiple times
to confirm that the action is free and easy with-
out binding or interference. Make sure that the
cable has a bit of “sloppy” slack with the gas
pedal released and that full throttle is available
when the gas pedal is fully depressed. If it does
not “flop” in the idle position, you will have trou-
ble setting your idle speed. Make sure that the
cable is run in such a way as to allow for engine
movement from side to side. Make very certain
that all throttle cable mounting points are
secure - this installation area is critical for
safe operation of your car. This bracketry
has been carefully designed for correct
operation. It is your responsibility as the
installer to insure that it is bolted together
successfully without binding or interference.
7.0 AIRFLOW METER WORK
7.1 Locate the new air filter base from your kit
and install it to the air flow meter intake port
using the reducer hose and clamps. Note the
“Arrow” cast into the side of the air flow meter, it
denotes the direction of airflow through the
meter. It should point away from the air filter
base, towards the firewall of the car. The correct
orientation of the air flow meter will be such that
the electrical plug connection will be facing the
LEFT side near the bottom, when looking in the
inlet port of the air filter base.
7.2 Locate the driver’s side shock tower support
and notice the Mazda air filter box mounting
bracket (painted body color) on the forward edge.
This vertical bracket is held in place by a horizon-
tal bolt (also painted body color). Remove the
bolt using a 10mm socket and store the bracket.
7.3 Bring the air flow meter with the air filter base
installed over to the engine bay. Tilting the
assembly at an angle, feed the air flow meter
outlet into the rubber reducer sleeve already in
place on the plastic elbow (install loose hose
clamp first). The air flow meter assembly fits into
the space just inside the shock tower. Install the
rubber grommet that you earlier removed from
the stock Mazda air filter box into the 3/4” hole in
the base of the new Air Filter. Insert the grommet
from the backside so that the grommet’s flange is
on the outside of the filter base. The small hole
and boss in the air filter base will line up with the
horizontal hole you just removed the 6mm body
colored bolt from. Using the longer bolt provided
(M6 x 30mm, Allen head), attach the air filter
base/air flow meter assembly to the car using this
bolt (it mounts horizontally, through the air filter
base, the flying buttress, and into the Mazda cap-
tive nut on the flying buttress). Use thread-locking
compound. Make sure that the electrical connec-
tor on the air flow meter is still accessible for the
main wiring harness connector to be installed.
7.4 Make sure that there is no chaffing or rubbing
anywhere along the plastic elbow assembly, even
though it is a very tight fit. Gently reposition any
brake lines that are pressing against the elbow.
Make sure all joints and clamps are secure - a
leak in this area will keep your car from idling
correctly. However, never over tighten your
clamps, they may break somewhere down the
road. Install the small piece of vacuum line sup-
plied from the bypass block vacant nipple to the
‘small’ nipple on the plastic elbow. Use the small
length of rubber hose (1/4” dia.) that is slit along
its length to cover the brake line running just
above the plastic elbow. This will prevent any
contact at this point, which may result in noise
during operation.
7.5 Locate the 3/4” diameter idle air hose (5’
length) from your kit. Attach one end to the ‘large’
outside fitting on the plastic elbow downstream of
the airflow meter (just below the brake master
cylinder once the elbow is in place). Use a clamp
to secure the hose to the short 3/4” nipple. Run
the hose toward the front of the engine compart-
ment, at approximately 15” from the elbow cut
the hose and install the silver Check Valve in the
hose with the clamps provided. Install the check
valve with the large flanged end towards the
elbow, so that air can flow from the elbow, and
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Figure 7.2