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BY
HOWIE
Filters offer a cheap
and easy way to improve the performance of your EXA. Many aftermarket
filters (such as K&N, UniFilter, HKS, etc) improve airflow and
extend time before servicing them. Midrange torque and high-end
torque should improve noticably, but it works even better if you
have an exhaust system and/or powerchip.
Pod-type filters aren't
an easy fit in the Nissan EXA (CA18DE). Simply because the airbox
is removed and the EFI sensors are attached to this box. This
means you must custom fabricate a bracket to hold the sensors.
Also you'll be drawing more heat from the already tight engine
bay, so you may have to think about cold air induction and a custom
box to house the pod.
Personally, I don't
like to stuff around so I picked up a K&N replacement filter which
sits in the original air box. However if you do want to install
an air-pod, check out Nathan's
How-To Article.
This took about 5 minutes
to install and the results were instant. Torque improves slightly
and fuel economy is also a bonus. Averaging about 10.5L/100km
even on premium unleaded petrol and driving fairly hard. The cost?
$95Aust for the filter. For an aftermarket air filter to work
properly, I'd highly recommend fabricating a cold air induction
pipe. I was so amazed with the results that I've created a whole
new page on cold air induction, check it out!
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