Jim Hoskins [1991 sedan]
"I preformed minor surgery by removing the extensive duct work in the fender well.
- I extracted the "removable piece" in the 'lower grill'
- I installed a 4" twin wall aluminum flex dryer exhaust hose
- I guided it up and attached it to the factory air box
- I then installed a K&N Air Filter
This resulted in increased low end power, especially in the 5,500 to 7,000 RPM range. Obviously, the faster you go, the
more the 'ram air effect' increases. Resulting in a smother response & possibly freeing up extra horsepower. I certainly
can feel a difference."
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Jim Trinh [1991 sedan]
"I have the RS Akimoto intake, and with the maze of factory air ducts being useless, I removed them along with the
resonator box. This created a nice if not straight passage from the front bumper to the air intake unit because the
resonator box is the only thing between cold air and the engine bay.
Setup One: A trip to my local hardware store produced a 3" 45-degree bent flexible plumping tube for $10. I removed the
Akimoto cone filter and hooked up one end of the tube to the intake pipe. I attached the Akimoto cone filter to the other
end, which hung down in the area where the resonator box used to be. Luckily I had a short 3" pipe that connected the cone
filter to the black tube.
Anyway, the black tube runs from the Akimoto intake down into the hole that is seperate from the engine bay, sucking in
cold air instead of hot air. For even colder air, remove the passenger side factory foglight cover (for '91 to '93 Legends
only) so that cold air blows directly into the filter. Of course this setup will also eat up water if you drive in the
rain, so it's good to have tools handy to remove this setup and go back to the original intake setup when you spot rain
drops on your windshield.
The effects are quite good! You can really feel an increase in power and torque, especially at the high end when the
cold air is really coming in hard. I improved my 0-60 time by 0.5 seconds. Unfortunately because of the long path the
air has to take coming to the engine, there is a bit of a pause when you stomp on the gas as the power spools up. But I
highly recommend this setup in the summer season when you won't have to worry about rain.
Setup Two: Remove the Akimoto cone filter and replace it with a Weapon R VR2 cone filter. The VR2 filter has a hose
attachment at the top of the cone, to allow you to connect a hose that brings in colder air. So taking a flexible dryer
hose, I connected it to the VR2 filter. I ran the hose down through the opening to where the resonator box used to be.
It's now sucking in cold air in addition to the hot engine bay air.
This setup is excellent for gaining both torque and horsepower because you get the open air element and also the
torque spool from the hose. Plus you get the cold air rush coming in from the hose. You can also remove the foglight
slot cover for more cold air.
Now when I stomp on the gas, instead of pausing for a bit when Vivian runs out of air, she keeps revving up higher and
higher. This makes for excellent acceleration gain."
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The combustion process uses oxygen as a catalyst. Unfortunately the air we live in is only made up of 10% oxygen. So the
more oxygen you can feed your engine, the greater the combustion (and power) it can achieve. Cold air is denser, which also
means it contains more oxygen. Unfortunately your engine get really heat up the air in the engine bay, which gets sucked into
your combustion chamber. So if you could find a source of cold air to pump into the air intake, it would theorically yield
more power.
