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Introduction

With the availability of exhaust systems in the aftermarket world, the Subaru BRZ is quite the contender in the aftermarket community. In this write up, we will show the install of a Tomei Titanium front pipe on our Subaru BRZ. This write up will also work on a Scion FR-S and also for any other brands of front pipes.

  1. Initially, before starting on any project on the front of the car, you would want to get it in the air. Supported by Jack stands. There are various bolts on the back under tray that need to be taken off with a 10mm socket There are 11 Bolts that have to be taken off to remove the black under tray.
    • Initially, before starting on any project on the front of the car, you would want to get it in the air. Supported by Jack stands.

    • There are various bolts on the back under tray that need to be taken off with a 10mm socket

    • There are 11 Bolts that have to be taken off to remove the black under tray.

  2. After getting the rear under tray off, its time to move on to the front under tray. Theres 7 black clips that require a flat head to pop out. Be careful not to break the head on these. Once they pop out, just pull them out of the hole. After the Clips are out, go ahead and use the 10mm socket to get the bolts out. There should be (8) 10 mm head bolts holding up the under tray.
    • After getting the rear under tray off, its time to move on to the front under tray.

    • Theres 7 black clips that require a flat head to pop out. Be careful not to break the head on these. Once they pop out, just pull them out of the hole.

    • After the Clips are out, go ahead and use the 10mm socket to get the bolts out. There should be (8) 10 mm head bolts holding up the under tray.

    • Once those bolts are taken out, the under tray will drop. Be careful not to damage the tray as it is a key item in the undercarriage of the vehicle.

  3. First step is to unbolt the nuts from the front pipe that connects to the cat back part of the exhaust. Keep these, as they will be reused later on.
    • First step is to unbolt the nuts from the front pipe that connects to the cat back part of the exhaust. Keep these, as they will be reused later on.

  4. Caution, depending on your region's weather condition, oxidation must make it difficult to remove nuts. Using a 14mm wrench, remove the two nuts holding the frontpipe to the overpipe. Utilizing a 14mm wrench, remove the bolt supporting the front pipe to the transmission mounting bracket.
    • Caution, depending on your region's weather condition, oxidation must make it difficult to remove nuts.

    • Using a 14mm wrench, remove the two nuts holding the frontpipe to the overpipe.

    • Utilizing a 14mm wrench, remove the bolt supporting the front pipe to the transmission mounting bracket.

  5. With the front pipe being supported by the hook on the center bracket, separate the front pipe from the catback. Remove front pipe from center bracket. Some pressure on the bracket may be required. Front pipe can now be separated from the overpipe studs.
    • With the front pipe being supported by the hook on the center bracket, separate the front pipe from the catback.

    • Remove front pipe from center bracket. Some pressure on the bracket may be required.

    • Front pipe can now be separated from the overpipe studs.

  6. Now that you have the Stock front pipe out, you are now ready for the install of the replacement front pipe, or any other exhaust component.
    • Now that you have the Stock front pipe out, you are now ready for the install of the replacement front pipe, or any other exhaust component.

  7. Open the Tomei box and check for all parts. Install the 2 bolt gasket that goes in between front pipe and overpipe. Depending on the weather conditions of your region, rust may have resulted on the overpipe studs, threads may be need to be cleaned.
    • Open the Tomei box and check for all parts.

    • Install the 2 bolt gasket that goes in between front pipe and overpipe.

    • Depending on the weather conditions of your region, rust may have resulted on the overpipe studs, threads may be need to be cleaned.

  8. Tomei also provides bolt smooth paste to install on the threads on the overpipe. Smooth paste can be substitued with traditional anti seize, Utilizing factory hardware to overpipe, secure but do not tighten the front section of the tomei front pipe. Utilizing factory hardware to overpipe, secure but do not tighten the front section of the tomei front pipe.
    • Tomei also provides bolt smooth paste to install on the threads on the overpipe. Smooth paste can be substitued with traditional anti seize,

    • Utilizing factory hardware to overpipe, secure but do not tighten the front section of the tomei front pipe.

  9. Slip a T-bolt clamp on the rear section with the threaded portion facing up and the head of the tightening bolt facing the driver side.
    • Slip a T-bolt clamp on the rear section with the threaded portion facing up and the head of the tightening bolt facing the driver side.

    • After assembling the two pipes, secure but do not tighten the pipe to support bracket.

  10. Using the factory donut gasket in between the front pipe and the catback, secure but do not tighten Tomei front pipe to catback using factory hardware. Note: Tomei smooth paste is recommended Note: Tomei smooth paste is recommended
    • Using the factory donut gasket in between the front pipe and the catback, secure but do not tighten Tomei front pipe to catback using factory hardware.

    • Note: Tomei smooth paste is recommended

  11. Tightening time! Tighten the two 14mm nuts from the overpipe to the front pipe. Secure factory hardware from front pipe to catback.
    • Tightening time! Tighten the two 14mm nuts from the overpipe to the front pipe.

    • Secure factory hardware from front pipe to catback.

    • Use smooth paste.

  12. Secure front pipe to transmission support bracket.
    • Secure front pipe to transmission support bracket.

  13. Tighten 10mm t-bolt clamp on the front pipe.
    • Tighten 10mm t-bolt clamp on the front pipe.

  14. Tomei front pipe has an additional bung near the catback that will be ultilized when installing headers or for tuning.
    • Tomei front pipe has an additional bung near the catback that will be ultilized when installing headers or for tuning.

    • Seal with provided plug if not in use,

  15. So in comparison, the Stock Front Pipe was WAY heavier than the Tomei Titanium front pipe.  The gains from the cat removal and the weight loss will definitely make a noticeable difference in performance. So in comparison, the Stock Front Pipe was WAY heavier than the Tomei Titanium front pipe.  The gains from the cat removal and the weight loss will definitely make a noticeable difference in performance.
    • So in comparison, the Stock Front Pipe was WAY heavier than the Tomei Titanium front pipe. The gains from the cat removal and the weight loss will definitely make a noticeable difference in performance.

Conclusion

The Front pipe gets rid of the secondary cat. Be sure to enjoy the exhaust note and be careful when you're enjoying it.

One other person completed this guide.

Dung Nguyen

Member since: 03/27/2013

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