Grimmspeed Red Post MAF Hose Kit Subaru STI w/ OEM Sound Tube 2015-2017 | 125014 vendor_Perrin available with a six puck

available with a six puck sprung plate is good for penetrating engagement with higher horsepower applications

but a little expensive

Best paired with upgraded valve springs and retainers

The IAG Performance billet timing belt guide is the best method to prevent your EJ engine from skipping a beat

Grimmspeed Red Post MAF Hose Kit Subaru STI w/ OEM Sound Tube 2015-2017 | 125014 vendor_Perrin available with a six puckSome 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. GrimmSpeed now has you covered with our all new Post MAF Hose Kit which not only looks better, but fixes the performance flaws of its OE counterpart. Our Post MAF Hose construction improves flow with 2 main features: The first is the smooth inner surface, removing the pockets from the OE structural