715170 - GR Redline Intake
715170 - GR Redline Intake
2008-14 Subaru WRX, WRX STI
Congratulations on your purchase of the COBB Tuning GR Redline Intake! The following instructions will assist you through the installation process. Please read them BEFORE beginning the install to familiarize yourself with the steps and tools needed. If you feel you cannot properly perform this installation, we HIGHLY recommend you take the vehicle to a qualified and experienced automotive technician.
Parts List
Tools Needed
Sockets
3/8"
3/8" ratchet
3/8" 12" extension
3/8" 6" extension
3/8" 7mm socket (optional stock hose clamps)
3/8" 8mm socket (optional COBB hose clamps)
3/8" 10mm socket
3/8" 12mm socket
3/8" 17mm socket
Hand Tools
Phillips head screwdriver
Flathead screwdriver
Trim removal tool
Pick
Stock Intake Removal
Carbon Intake Pre-Assembly
Carefully separate the large ring gasket away from the rest of the gaskets on the pre-cut sheet. Remove the pieces that are inside of the pre-cut holes. This can be installed on the large opening of the air filter housing. Make sure to line up the pre-punched holes with the threaded inserts.
The second gasket can be put on the rear block-off plate mounting area. Make sure to once again line up the holes with the existing threaded parts.
If you want to put on the rear blockoff plate now is a good time to do so. Using your supplied 4mm allen key and the four 16mm long allen bolts, screw it in place hand tight. While it should be hand tight it doesn't need to be insanely tight as overtightening could cause damage.
Take the smaller mounting bracket and pop one of the provided rubber grommets of the larger size into the big opening.
Like you just did on the smaller bracket, Install the remaining large grommet into the long mounting bracket.
Grab the supplied round aluminum mounting plate and slip it over the MAF housing with the machined side facing away from the velocity stack
Using 3 of the shorter (10mm) allen bolts along with the 4mm allen wrench provided, screw down the adapter plate to the MAF housing. The three bolt holes should line up with the threaded inserts on the three sides that don't have the MAF opening.
Using a 7mm socket or your screwdriver, install the supplied air filter onto the velocity stack.
Install it into the airbox with the MAF opening towards the top side. Secure it using the 4 remaining Allen Bolts
Make sure the MAF mounting flange is pointed towards the top of the intake!Using the small provided silver colored allen bolts, install the MAF sensor onto the MAF housing.
Engine Bay Prep
Using a 10mm wrench remove the front most bolt holding the ABS bracket in place before slipping the long bracket underneath it and loosely screwing that bolt back in. Then install the long flange headed bolt into the front hole of the supplied bracket and into the frame rail. You can leave it loose so you are able to slightly adjust it to fit the position of the bottom of the intake later.
Remove the forward power steering reservoir bolt from the fenderwell.
Bolt in the side airbox bracket to the front of the power steering reservoir bracket using the original bolt, and the two bolts at the front where the original airbox support bracket was.
Intake Installation
With a hose clamp over either end (loose), slip the supplied coupler over the turbo inlet with the logo facing towards the airbox.
With the coupler angled up on the inlet and the airbox end of the intake down towards the fender, get the MAF housing into the coupler at the bottom first then gradually drop everything down into place.
With the intake sitting in the coupler, wiggle it around to get the bottom pin into the lower bracket.
Now is a good time to loosely install the upper bracket using the two factory nuts. This gets put in the same spot you removed the original upper support from the intake.
At the front, poke the provided plastic rivets through the airbox and into the radiator support, then screw them in with a phillips screwdriver. They don’t need to be tight, just go until they stop turning easily as they’re expanding the plastic outward to hold everything in place.
Now go ahead and tighten down the long lower bracket, then the upper bracket, before finally tightening down the hose clamps on the silicon coupler.
You can now go ahead and plug in the MAF sensor. If it doesn't reach, double-check the routing. It may be that you need to remove a clip holding the harness to the body.
Rear Block-Off Plate
If you want slightly more noise from the intake / bypass valve You'll want to leave the vent open (at the expense of some hot air from the engine bay going into the intake). If you want all of the air to come from the snorkel at the front you'll want to leave the panel in place.
CARB Sticker Application
Links
MAP Notes
Helps to figure out which map you should be on given the parts installed to your car
Links for related parts