There has been a lot of stir lately about the Subaru BRZ and the Scion FR-S, and for good reason - both cars are very capable and are excellent rear wheel drive platforms that are just begging to be modified. With the 2.0L Boxer engine, everyone is excited to up the performance with an exhaust system, but most aren't sure which is right for them. We wanted to explain some of the differences here and help you make a decision.
The Subaru BRZ and Scion FR-S both share the same chassis, so both use the same exhaust. You can see that all of the Scion FR-S Exhaust and Subaru BRZ Exhaust systems both have the same part numbers. Below we will go through various modifications you might have and which exhaust would be best for you. We will be updating this list often as new exhaust systems come out so please check back often, and leave us any questions or feedback below.
I will mainly leave my car stock or add slight modifications. What exhaust do you recommend?
If you are going to mainly have a stock car with the exception of an intake and various other modifications, you can simply get a new axleback or catback exhaust that is around the stock size or a bit bigger. We don't recommend to go with too big of an exhaust as you won't gain much power but you will certainly create a lot of noise. At these kind of modification levels, a nice 2.5" exhaust would be just right.
I want to get a full exhaust, all the bolt ons, and maybe later nitrous or a supercharger
If you know you are going to try and make more power with all of the bolt on modifications plus a power adder such as nitrous or a supercharger (note we're not grouping turbo kits into this), then we would recommend at least a 2.5" exhaust or more, maybe even a 2.75" exhaust. We also recommend an exhaust that has a straight through muffler for less restriction. A straight through muffler will be louder, but also allow you to make more power as the muffler isn't as restrictive and allows for easier exhaust flow.
I need power! I am going to go turbo for sure, and need to make as much power as possible
For the all out exhaust, we recommend a 3" exhaust with a straight through muffler as well as the rest of the exhaust also being upgraded with 3" from the turbo back. If you are going to run less than 10 PSI, you can still run a 2.5" or 2.75" exhaust, but you will limit your power potential. For those with a built motor, 3" is the way to go.
Agency Power Subaru BRZ/Scion FR-S Catback Exhaust
A popular exhaust that's available is the Agency Power exhaust and it features a 2.5" stainless steel dual exhaust with 4" titanium burnt tips. This exhaust also includes an intermediate pipe and includes a limited lifetime warranty.
The Low Down: Good for moderate power production and sounds good. Small mufflers will produce a louder exhaust, but the exhaust sounds clean and refined and would be good for cars producing under 300whp.
Borla Subaru BRZ/Scion FR-S Catback Exhaust
Borla has a 2.5" exhaust with 2" split rear pipes and a 4.25" polished tip. This exhaust has low restriction and features it's muffler at the start of the intermediate pipe which reduces weight from the rear of the vehicle, and puts a bit of weight toward the middle.
The Low Down: Good for moderate power production and sounds good. One small muffler is less restrictive than two mufflers but will produce a louder exhaust. Good for cars producing under 300whp.
GReddy SP Elite Subaru BRZ/Scion FR-S Axleback Exhaust
The GReddy exhaust is a classic amongst import enthusiasts. Their entry into the BRZ/FRS market is welcome, and they have one of the nicest exhaust's available, and at one of the best prices. 60mm piping is amongst the smallest of the group at 2.36".
The Low Down: One big muffler for a quieter sound, good for daily driving and looks. One of the most affordable exhausts on the market. Offers legendary GReddy sound, refinement and fitment. Axleback exhaust makes it less expensive, and reuses the factory intermediate piping.
Invidia N1 Subaru BRZ/Scion FR-S Catback Exhaust
The Invidia N1 exhaust is one of the best flowing exhausts for 60mm exhausts. While the piping is only 2.36", the straight through mufflers offer a performance benchmark close to a 2.5" exhaust. Available with polished or titanium tips.
The Low Down: One of our favorite exhausts for the BRZ/FRS platform. Good for those who aren't afraid of a louder exhaust. Features high flow, N1 style mufflers.
Magnaflow Subaru BRZ/Scion FR-S Catback Exhaust
Magnaflow offers the least expensive full catback exhaust for the BRZ/FRS. The Magnaflow exhaust features a famous Magnaflow high flow muffler and includes a Magnaflow resonator on the intermediate pipe to tone down the exhaust and give it a deeper sound.
The Low Down: 2.5" with good flow. Can't go wrong with Magnaflow. Least expensive full exhaust available at this time.
Perrin Subaru BRZ/Scion FR-S Catback Exhaust
Perrin Exhaust Systems are designed for power. Each exhaust features a single Perrin high flow muffler, a Perrin flex section and a Perrin resonator. Great sound and lifetime warranty make this a great all around exhaust.
The Low Down: 2.5" full catback exhaust with resonator and 4" slash cut exhaust tips. Sounds great, fits great, and looks great. Good overall exhaust.
Tanabe Medalion Touring Subaru BRZ/Scion FR-S Exhaust
The Tanabe Medalion Touring Exhaust is one of the more expensive exhaust, and is known as the "gentleman's exhaust" due to it's quiet and refined exhaust note. At 60mm, or 2.36", this exhaust is one of the smaller in the group and is good for a daily driver and someone who wants the upmost in quality and refined noise but not looking for the biggest power gains.
The Low Down: One of the nicest exhausts in the group and offers a clean and refined exhaust note.
Flowmaster American Series Subaru BRZ/Scion FR-S Exhaust
The Flowmaster American Series Exhausts is one of our favorite sounding exhausts for this boxer engine. Legendary Flowmaster sound, and great fit and finish. Flowmaster has built this exhaust system to be no nonsense, priced right, and offer excellent sound and performance. Can't go wrong.
The Low Down: No nonsense exhaust with a nice deep rumble and a great price.
More Info: Flowmaster American Series FRS/BRZ Exhaust
And there you have it. These are the most popular exhausts on the market at this time, but we are sure manufactures will release more. As people start to add turbo kits and various engine swaps to their BRZ/FRS, we expect exhausts to get bigger and more custom. We hope this helped you figure out which exhaust is right for you. If you have any questions or feedback, please leave your comments below.