Originally Posted by Stu @ M Developments

The theory it "Blows Out" is a little silly, i guess it was a term made to describe it easily but its certainly nothing to do with gale force winds. lol

The actual issue is that the more cylinder pressure we run, the more voltage is required at the spark plug center electrode in order to jump the gap in the hostile environment that is a combustion chamber. So its not actually *Boost* related as such, its actually more power related which is why it tends to happen at peak torque but because more power comes with more boost and bigger turbos you can easily see and understand why the mistake is made by many people.