Some original parts appear walkable while others miss the mark.
In the case of the factory post MAF hose, the quicker it can be removed from your bay, the better.
Now you are covered with the GrimmSpeed Post MAF Hose Kit that not only looks better but also corrects the flaws of your original parts counter.
Our hose construction improves flow with two main features: The first is the smooth interior surface, which eliminates the pockets of OE corrugated pleats.
These folds are necessary to the factory rubber design for flexibility during installation and structural integrity.
The Grimmspeed hose is made from reinforced silicone, which is flexible but has strong structural properties that allow for a hose that is very easy to install without worrying about collapsing under vacuum.
The second feature is a tapered center part, ensuring the inside diameter matches the OEM airbox and turbo inlet.
A mismatched bore creates passages that disrupt airflow paths and create small vortices in the post-MAF hose.
The Grimmspeed hose was specifically designed to avoid these problems: Paired with the GrimmSpeed DRY-CON panel air filter, this will be the best way to maximize your factory intake system until it's time to upgrade to a full GrimmSpeed admission.
