Originally Posted by Voltwings
Boring the TB spacer would defeat the purpose, since its supposed to create that "tornado affect." With a bored out (and thus, smooth) TB spacer you're basically just increasing the plenum volume slightly.
The Mega Air TB spacer is smooth. It was ment to just increase plenum volume like your saying.
The "Tornado" effect doesn't do squat. Remember that product some few years back "Vornado". Was supposed to generate a vortex and help improve MPG. I didn't help and most felt a loss in power as well as mpg. It's a nice idea that sounds good but never actually follows through with its claims.