Cat-Back Exhaust, fits Subaru WRX/STI 2015-2021
Cat-Back Exhaust, fits Subaru WRX/STI 2015-2021
MISHI POINTS INFO
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- Direct fit for the 2015-2021 Subaru WRX/STI
- Dyno-proven maximum gains of up to 9 whp and 8 wtq and peak gains of up to 4 whp and 3 wtq using 93 octane fuel while maintaining safe AFRs on the stock tune (2015 WRX w/ CVT)
- Extremely aggressive turbo and exhaust tone under acceleration and boost
- Mates with the Mishimoto, stock, or most aftermarket downpipes
- Installs in under an hour
- Designed with oval mufflers to prevent highway drone
- Quad 3.5-in staggered double wall, polished tips
- Full 304 stainless steel mandrel-bent construction
- 3-in to 2.25-in exhaust split helps maintain proper exhaust velocity
- TIG-welded to perfection
- Mishimoto Lifetime Warranty
Installation Difficulty: Easy
- Direct fit for the 2015-2021 Subaru WRX/STI
- Dyno-proven maximum gains of up to 9 whp and 8 wtq and peak gains of up to 4 whp and 3 wtq using 93 octane fuel while maintaining safe AFRs on the stock tune (2015 WRX w/ CVT)
- Extremely aggressive turbo and exhaust tone under acceleration and boost
- Mates with the Mishimoto, stock, or most aftermarket downpipes
- Installs in under an hour
- Designed with oval mufflers to prevent highway drone
- Quad 3.5-in staggered double wall, polished tips
- Full 304 stainless steel mandrel-bent construction
- 3-in to 2.25-in exhaust split helps maintain proper exhaust velocity
- TIG-welded to perfection
- Mishimoto Lifetime Warranty
Product Description
TECH SPECS
| Pipe Diameter | 3 |
|---|---|
| Weight (Pounds) | 42 |
| Engine Codes | FA20DIT EJ257 |
| Chassis Codes | VA GH |
| Applications | 2015-2021 Subaru WRX 2015-2021 Subaru STI |
| Note | This product has been designed to fit both manual and CVT transmission vehicles. Mishimoto does not recommend installing this cat-back exhaust and the Mishimoto Performance Air Intake with the stock ECU programming. It is recommended that the customer is able to retune the vehicle's ECU after installing the cat-back exhaust and the intake. Power gains will vary depending on the type of ECU tune that is applied to the vehicle. |
Compatible Vehicles
Installation Guides
Downloads
Purchase Includes
(1) 8 oz Filter Oil
(1) Applicator Bottle with Orange Applicator Lid
Mishimoto Lifetime Warranty
Note:
This product has been designed to fit both manual and CVT transmission vehicles.Mishimoto does not recommend installing this cat-back exhaust and the Mishimoto Performance Air Intake with the stock ECU programming. It is recommended that the customer is able to retune the vehicle's ECU after installing the cat-back exhaust and the intake. Power gains will vary depending on the type of ECU tune that is applied to the vehicle.
Interested in purchasing our 2015 WRX cat-back exhaust? Check out more details on our product page linked below!
Subaru WRX/STi Cat-Back Exhaust
As promised, we hit the road to begin testing our prototype designs. Our first round of testing was purely to evaluate the tone and sound level of the exhaust.
What are we looking for?
- Rich tone
- Little to no rasp
- Minimal highway drone
- Noise amplification from one-half to full throttle
As you know, the FA20 utilizes an equal-length header, which means that the traditional Subaru rumble is likely to be lost. Either way, we would be looking for a nice tone that would be acceptable for daily use.
Our first road test utilized our smaller, round style muffler.
Interested in purchasing our 2015 WRX cat-back exhaust? Check out more details on our product page linked below!
Subaru WRX/STi Cat-Back Exhaust
Prototype Fabrication
With the front section of our exhaust complete, we needed to address the Y-section as well as the pipes routing to the mufflers. We decided to go with 2 1/4" piping following the Y-section, which matches the diameter of the STi system.
Check out a couple shots from the fabrication process.
Fabricated muffler section
We bent a few more hangers for attaching the mufflers to the appropriate stock locations.
Interested in purchasing our 2015 WRX cat-back exhaust? Check out more details on our product page linked below!
Subaru WRX/STi Cat-Back Exhaust
An aftermarket exhaust is an easy way to distinguish your car from the slew of vehicles roaming the streets. Not only does it enhance aesthetics, but the amplified noise is also a dead giveaway that you are an automotive enthusiast. For many of us, an exhaust is a simple initial upgrade that will enhance the driving experience and provide greater enjoyment. With a variety of options popping up, it can be difficult to select a setup that will provide the noise level and tone that you want from your Subaru.
We are no stranger to exhaust components. Many of you kept up with the progress of our build for the FA20 downpipe we developed and released a few months ago. Thanks to a skilled engineering team, high-quality materials, attention to detail, and impressive craftsmanship,
Warranty
Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.
For our complete warranty policy, please click here.
Frequently Asked Questions
