A: Radio Frequency Interference (RFI) or electrical "noise" is caused by ignition systems, alternators, wiper motors, etc., but the ignition system causes the strongest "noises" and they include a wide range of frequencies. This noise can cause interference with the operation of radios, electronic components, fuel injection systems, depth finders, and other sensitive electronic equipment. Resistor plugs, wires and spark plug caps are used as a RFI suppression system to reduce this noise.

A: Torch wires are manufactured to the specific dimensions of OEM wires. Most Torch wires are 7mm, while Toyota applications are 5mm where applicable. Most 8mm wires in the aftermarket are merely providing additional insulation, and do not increase the electrical capabilities of the ignition system.

A: Torch wire sets are custom manufactured to the exact dimensions of the application. There are no universal sets. Additionally, each individual Torch wire is labeled for the particular cylinder number for virtually fool-proof installation.

A: Torch uses a variable pitch wire to create the resistance necessary to filter RFI created by an operating ignition system. The variable pitch system alternates tightly wound and loosely wound copper wire around the center of the plug wire to create a magnetic field, creating the necessary resistance with a fraction of the impedance found in a solid carbon core type wire set.

To separate out and prevent potentially contaminant particles from entering engine. Air and fuel – dust particles and moisture. Oil – metal particles, sludge and carbon.

The percentage of dirt that a filter removes. The filter paper or 'media' determines what the oil, air or fuel has to pass through and where the dirt is trapped. The more twists and turns a particle of dirt has to take, the more likely it is to be captured.

Media is a mixture of various fibres bonded together.

The 'media' paper filters out the contaminants passing through the oil, air or fuel filter. Quality and quantity of media are very important. Some media may look similar but can perform differently. The function of filter media is to remove the greatest amount of contaminants while offering the least resistance to flow.

Q4.Does more pleated media filter paper mean better filtration?

Generally a filter with more media has the ability to trap more contaminants than one with less. Few pleats means little media and low capacity. Irrespective, the media must contain the appropriate resins and compounds.

How long a filter lasts before clogging up. Dust-holding capacity of the filter determines how long its life is. The more high-quality paper inside the filter the more dirt it will hold and the longer it will last.

How easily air, oil or fuel flows through the filter. Minimising resistance to flow ensures that the engine is never starved of air, oil or fuel. Poor flow in a filter deprives engines of their vital needs, causing them to work harder, lose power and create rapid engine wear over shorter periods.

A micron a measurement equalling one millionth of a metre.

A measure of the pore size in the filter media. Expressed as either ‘Nominal’ or ‘Absolute’. Nominal Rating relates to the percentage of particles at a given size that a filter can capture ie. 10 microns at 90% means it will remove 90% of particles 10 microns in size. Absolute refers to the removal of all particles at a given micron size and larger ie. 20 micron absolute means 100% of particles 20 microns or greater will be captured.

The lower the micron rating, the greater the efficiency and hence the amount of dirt that is captured.

Common oil filter micron rating is approximately 30. (Human hair is approximately 70 microns)

When comparing different filter brands micron rating, you need to make sure that the same test procedures have been followed.

It stops oil from draining out of filter and oil galleries when the engine is shut down and aids quick flow of oil to engine on start up. Not all filters require anti drain back valve due to the construction of the engine.

Should the oil filter become blocked, the valve will open allowing oil to flow into the engine. Because unfiltered oil is better than no oil.