Instead of cutting it away at an agle like the tutorial I. Put mine on the bandsaw and cut around the very top of the threads its easier and you see all of the porcelin.anytime you upgrade or dick with anything that has to do with the intake or exhaust no matter how miniscule it may seem do a plug chop.
Instead of cutting it away at an agle like the tutorial I. Put mine on the bandsaw and cut around the very top of the threads its easier and you see all of the porcelin.anytime you upgrade or dick with anything that has to do with the intake or exhaust no matter how miniscule it may seem do a plug chop.