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STI also uses proper distributor angle Terminals which allow for a positive feel electrical connection every time you install or reinstall them. Other Brands provide a 90 degree distributor boot, but NOT a 90 degree terminal. (See the picture with the Red Wire) When you install their boot on a distributor cap it has a springy feel because you are actually pushing on the wire inside the boot.
Firepower: STI wire sets use stainless steel magnetic conductive windings for applications which can handle extra fire power to reach the spark plugs. This results in improved gas mileage and superior engine performance, while it prevents radio frequency noise from interfering with radios, cellular telephones, TV's, computers and other onboard electronic equipment.
MKI NA Wire Set:
MKI SC Wire Set:
Very high quality wires. Very tight in the seals, and keeps water out of the sparkplug hole. the stock ones leak after a while, but theese are nice and tight.
Not only do they work well, They actually fit like a factory wire set and have a nice tight seal on the valve cover valley cover. Overall, these seem like a better wire set than the factory ones.
The build quality is great, the wires have ~20 ohms per foot resistance and the ends are made very well. I would not buy them again though because they will need to be cut and have new ends put on for them to fit correctly. EDIT - the wires have been modified since this review was made and they no longer require any type of modification for proper fitment.