Originally Posted by turbomar
well, the MAF is a full 6mm wider opening, just like the TB. the intake manifold is already 74mm and so is the elbow. By replacing both, you'v just smoothened out the air flow. No step up and down between each components
I was speaking of the sensor itself, NOT the 68 mm plastic piece that holds it.
If you are retaining that plastic MAF part, of course upgrade to 74mm, but in the case of the NW CAI this does not apply.