Review on NGK (3964) BKR5EKU Standard Spark Plug - Reliable Performance and Durability, Pack of 1 by Kevin Nelson

Don't change the spark plug gap on two-electrode spark plugs, even if your vehicle manual says something about the correct gap. I have a 1997 VR6 and if the coil pack is working fine and you are getting the proper spark needed for proper combustion, the factory gap works best. If you screw up the gap, you'll need to replace the end caps if they appear damaged. Don't worry too much about the symmetry of the gaps, they only burn in one direction and choose the path of least resistance, e.g. B. the next electrode or the cleanest spot with the least carbon deposits. I'm not sure if both should fire, I'm almost sure only one will fire. Definitely don't rip them apart if you don't have a factory turbo.