Parts List:

1. TurboXS Cat-less Uppipe

2. Studs (4)

Recommended Tools List:

1. Long nose pliers

2. Wire cutters

3. WD-40
4. Flat head screw driver
5. Philips head screw driver
6. Socket Wrench
7. 10mm Socket
8. 12mm Socket (not shown)
9. 14mm Socket
10. Socket Wrench extension
11. 14mm open end wrench
12. 10mm open end wrench
13. Oxygen sensor wrench 

There are 4 basic steps to installing the full TurboXS Cat-less Uppipe:

1. Remove the Factory Exhaust System (2 Hours)
2. Remove the Factory Turbocharger (1 Hour)
3. Install the TXS Cat-less Uppipe (2 Hours)
4. Final Inspection and adjustments (1 Hour)

NOTE: It is best to do this step while the car is cool, as the muffler remains hot long after the car has stopped running.  

1. Jack the rear of the car up and place car jacks under each side of the car.
2. Use a 14mm socket wrench and 14mm box end wrench to remove the 2 bolts that hold the stock rear muffler assembly to the rear center pipe.  Retain bolts and gasket as you will re-use them to install the new muffler.
3. Spray a light lubricant (like WD-40) onto the 3 rubber muffler mounts and than remove the stock muffler from the mounts.  Be sure to support the muffler as you remove it from the mounts otherwise it will fall on you!  

NOTE:

1. It’s best to install the exhaust when the car and exhaust is cool.
2. Spray all bolts and exhaust hangers with WD-40 and let soak for a few minutes to ease the removal and installation process.
3. Exhaust installation is much easier with two sets of hands.  Get a friend to help you in exchange for letting them drive your WRX for a few minutes after the install is done!
4. Read the ENTIRE directions first as it will likely save you time!
5. Don’t even think of calling us if you have NOT read the directions yet!.  However, don’t hesitate to call us if you have read the directions but you still have questions or are having any problems.  Call us toll free at 877.887.2679.

Step 1:  Factory Exhaust Removal:

1. Remove the rear center section and rear muffler section as one piece by removing the spring bolts between the rear catalytic converter and the rear center section.  Retain the factory springs as you will re-use them when installing the TurboXS exhaust system.
2. Remove the intercooler by loosening the two bolts securing it to the mount.  Loosen the intercooler hoses from the throttle body and the turbocharger.  Remove the intercooler by gently pulling up and back.
3. Remove both intercooler brackets.
4. Remove the turbocharger upper heat shield (7, 10mm  bolts). See below.

5. Remove the turbocharger lower heat shield (3, 10mm bolts).  

6. Unbolt the downpipe from the turbocharger (5, 14mm nuts).
7. Disconnect the connector going to the rear oxygen sensor.
8. Push in or cut the plastic clip that holds the rear oxygen sensor to the crossmember.
9. Remove the bolt that holds the downpipe bracket to the transmission.
10. Remove the bolt that holds the catpipe to the hanger bracket.  Retain this bolt as it will be used when you install the TurboXS downpipe.
11. Remove the downpipe.
12. Remove the rear oxygen sensor from the downpipe.  Do not touch the sensor tip and keep it clean and free from contamination until it is re-installed.

1. Drain the coolant.  Remove the drain plug at the bottom of the radiator to drain the coolant and remove the coolant pressure cap.  
2. Remove the 2 rubber coolant lines.
3. Remove the hard oil line by unbolting the banjo connection on top of the turbo.  Be sure not to lose the 2 copper crush washers on both sides of the banjo joint.  
4. Remove the turbocharger.  Remove the 3, 14mm nuts securing the turbocharger to the uppipe.  You may have to slightly bend the hard oil line to remove the turbo.  Pull up on the turbocharger and slip the bottom rubber oil drain line off.  

1. Remove front plastic splash guard at the bottom of the engine bay by removing the 3, 1mm bolts and 3 plastic fasteners. 

2. Remove factory oxygen sensor located in the passenger side exhaust manifold.  Use of an 02 sensor wrench is highly recommend as to prevent damage to 02 sensor.  The 02 sensor can be accessed through a port located in the front passenger wheel well by removing the plastic fasteners and plastic cover.
3. Remove the factory heat shield on the passenger side exhaust manifold secured by 4, 12mm bolts.
4. Unbolt the factory uppipe from the exhaust manifold by removing the two 14mm bolts.  Save the gasket or replace with a new one.!
5. Remove the factory uppipe through the turbocharger area.
6. Install the supplied studs into TXS Uppipe.  Installing studs after inserting the TXS Uppipe may ease installation into the turbocharger bracket. 

7. Reinstall or replace the exhaust manifold gasket and bolt the TXS Uppipe onto the exhaust manifold.  If you opted to leave the studs out of the TXS Uppipe you must install those now.  It is critical that the TXS Uppipe is bolted and torqued to the exhaust manifold first to avoid an exhaust leak.