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This air intake system was developed to accommodate the engines factory emissions control devices including the breather hose
The perfect way to provide a custom look for your vehicle
Included software designed for use on a factory engine (See notes)
It provides a drastic difference in tone and overall volume from the much more quiet stock exhaust system while maintaining a drone-free driving experience
Grimmspeed Post MAF Hose Kit BLACK - Subaru 08-14 WRX/STI, 18-20 STI (125011) 1781 This air intake system wasSome OE parts look passable and others miss the mark. In the case of the factory post MAF hose, the quicker you can get it out of your bay, the better. We've now got you covered with The GrimmSpeed Post MAF Hose Kit that not only looks better, but fixes the flaws of its OE counter part. Our hose construction improves flow with 2 main features: The first is the smooth inner surface, removing the pockets from the OE corrugated folds. These folds are