Spark plug wire comparison between Accel wires, MSD wires, Magnecor wires, Mopar wires, and Granatelli wires.
We're frequently asked, whats the difference between all the wires that are available for my car ? We know it can be confusing, because, other than color of wire, and price, its hard to know which wire is the best quality wire for your money.
Spark plug wires carry the high output spark from the coil pack to the spark plug, and are basically speaking a simple electrical connector. So, the higher quality connector, wiring, and shielding will provide more of your spark from the coilpack, to your spark plug.
One easy way to test a spark plugs conductivity is to test the wire with a OHM meter. Testing a spark plug wire's ohm resistance will display how much resistance there is to the current that passes through the wire.
The lower the number, the lower the resistance, which means that more current will reach the spark plug. The lower the resistance, the better quality conductor materials are used in making the spark plug wires.
Now, onto testing the wires. We will display the wires from top to bottom from lowest resistance to highest resistance. <b> Remember, the lower the number, the better the wire set is. You should be buying the lowest resistance wire set possible.
(Granatelli wires, pictured above, 2 OHMS)
Here we have the Granatelli wires. These wires were the lowest wire OHM resistance wire we have ever tested, at 2 ohms of resistance. Granatelli uses a stainless steel core, wrapped in silver plated copper wiring. This is the highest quality wire we have ever carried, and the wire that we strongly recommend.
(MSD wires, pictured above, 33 OHMS)
In second place, we have the MSD wire set. Compared to the Granatelli wires in first place, these wires are red in color, and come in at 33 ohms of resistance to the Granatelli wires's 2 OHMs of resistance. The MSD wires are still good quality though. Msd states on their boxes that they use a copper alloy conductor for their wires.
(Accel wires, pictured above, 124 OHMS)
In third place, we have Accel wires. These use a copper/alloy wire core, and are has a 8mm silicone jacket. These wires had a cheaper feel, and look compared to the other wires, but still had a great, low resistance.
Mopar wires 390 OHMs
(Mopar wires, pictured above, 390 OHMS)
Fourth place belongs to the Mopar Performance spark plug wires. We measured these wires to have 390 OHMS of resistance which is quite high, but still acceptable.
(Magnecor wires, pictured above, 1548 OHMS)
Fifth place place belongs to the Magnecor wires. Magnecor wires had the highest resistance out of all of the wires we tested, coming in at 1548 OHMS of resistance. (In Magnecor's defense, they claim that low OHM resistance wires are not a measure of quality, you can read more about it on their website here: Magnecor Race Wires