SPDZ1 2.5″ Catless Downpipe+Front Pipe For Honda Civic 1.5t Turbo EX LX SI 2016-2022
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*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
Honda Civic 1.5T Turbo (2016-2023) | EX • LX • Sport • Si
Unleash the Full Potential of Your 1.5T Turbo
Take your Honda Civic's performance to the next level with the SPDZ1 2.5" Catless Downpipe & Front Pipe. Engineered specifically for the 2016-2023 Honda Civic 1.5L Turbo platform, this complete turbo-back upgrade dramatically improves exhaust flow by replacing the restrictive factory catalytic converter and front pipe.
Manufactured from premium stainless steel and precision TIG welded, the SPDZ1 downpipe is built to withstand extreme temperatures while delivering improved turbo spool, quicker throttle response, and a deep, aggressive exhaust tone.
Whether you're running a stock turbo or planning future performance upgrades, this is one of the most effective bolt-on modifications available for the L15B7 engine.
Why Choose SPDZ1?
Unlike restrictive OEM components, the SPDZ1 system is designed to maximize exhaust flow immediately after the turbocharger, allowing exhaust gases to exit more efficiently.
Benefits Include:
✔ Faster Turbo Spool
✔ Improved Throttle Response
✔ Reduced Turbo Backpressure
✔ Increased Horsepower Potential
✔ Increased Torque
✔ More Aggressive Exhaust Tone
✔ Improved High-RPM Performance
✔ Better Exhaust Flow for Tuned Vehicles
✔ Precision CNC Flanges
✔ Premium TIG-Welded Construction
✔ Mandrel Bent 2.5" Stainless Steel Tubing
✔ Direct Bolt-On Installation
Premium Construction
Every SPDZ1 downpipe is manufactured using high-quality stainless steel for exceptional durability and corrosion resistance.
Features
- Premium Stainless Steel Construction
- Full 2.5" Mandrel Bent Tubing
- Precision TIG Welds
- CNC Machined Flanges
- High-Strength Mounting Hardware Included
- O2 Sensor Bung
- Direct OEM Replacement Design
- Built to Handle High Boost Applications
Performance Gains
Replacing the restrictive factory catalytic converter and front pipe allows the turbocharger to operate more efficiently.
Typical benefits include:
- Faster Turbo Response
- Stronger Mid-Range Power
- Improved Top-End Performance
- Increased Turbo Efficiency
- Lower Exhaust Backpressure
- More Aggressive Exhaust Sound
Actual horsepower gains will vary depending on supporting modifications and ECU tuning.
Vehicle Fitment
Fits:
- 2016 Honda Civic 1.5T EX
- 2016 Honda Civic 1.5T LX
- 2016 Honda Civic 1.5T Touring
- 2016 Honda Civic 1.5T Sport
- 2017 Honda Civic 1.5T EX
- 2017 Honda Civic 1.5T Sport
- 2017 Honda Civic Si
- 2018 Honda Civic 1.5T EX
- 2018 Honda Civic 1.5T Sport
- 2018 Honda Civic Si
- 2019 Honda Civic 1.5T EX
- 2019 Honda Civic Sport
- 2019 Honda Civic Si
- 2020 Honda Civic 1.5T EX
- 2020 Honda Civic Sport
- 2020 Honda Civic Si
- 2021 Honda Civic 1.5T EX
- 2021 Honda Civic Sport
- 2021 Honda Civic Si
- 2022 Honda Civic Si*
- 2023 Honda Civic Si*
Please verify your vehicle before ordering.
What's Included
- SPDZ1 2.5" Catless Downpipe
- SPDZ1 2.5" Front Pipe
- Installation Hardware
- Required Gaskets
- O2 Sensor Bung(s)
Installation
- Direct Bolt-On Design
- No Cutting or Welding Required
- Uses Factory Mounting Locations
- Professional Installation Recommended
Tuning Information
While the vehicle can physically operate with this downpipe installed, an ECU tune is strongly recommended to maximize performance and reduce the likelihood of catalyst efficiency fault codes (Check Engine Light).
Off-Road Use Notice
This product is intended for closed-course competition and off-road use only.
It is not legal for installation on pollution-controlled vehicles in many states or countries. Please verify your local emissions regulations before purchasing.
Why Buy SPDZ1?
At SPDZ1, we engineer products with one goal in mind: deliver premium performance without the premium price tag. Every product is designed for enthusiasts who demand exceptional fitment, reliable performance, and long-term durability.
SPDZ1 Performance
- Premium Materials
- Precision Manufacturing
- Enthusiast-Tested Designs
- Performance You Can Feel
- Backed by Speedzone's 27+ Years of Automotive Experience
PREORDER ITEM, NEXT DELIVERY MID SEPTEMBER 2026
Buy It With
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.