- Joined
- Jan 26, 2017
- Threads
- 113
- Messages
- 1,575
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- 4,319
- Location
- Export, PA
- Website
- prlmotorsports.com
- Vehicle(s)
- 2017 Civic Si, 2016 Civic EX-T, 2018 Type R

- Thread starter
- #1
We've kept our FK8 downpipe development under wraps for a few weeks because we tossed around a handful of different ideas. Today our renderings were 3D printed and passed a fitment test.
Precision investment casting allows us to utilize a non-restrictive CLR, or center-line radius to maintain velocity out of the turbine into the 3.5" middle section. This process also allows us to retain the factory heatsheilds. The outlet of the downpipe features a 3" ID to connect seamlessly to both our 3" front pipe upgrade and the factory front pipe. All downpipes will be TIG welded and back-purged for optimal strength.
Once we receive our pieces back from casting we will be ready for testing and final fitment. Stay tuned with data and results!
Precision investment casting allows us to utilize a non-restrictive CLR, or center-line radius to maintain velocity out of the turbine into the 3.5" middle section. This process also allows us to retain the factory heatsheilds. The outlet of the downpipe features a 3" ID to connect seamlessly to both our 3" front pipe upgrade and the factory front pipe. All downpipes will be TIG welded and back-purged for optimal strength.
Once we receive our pieces back from casting we will be ready for testing and final fitment. Stay tuned with data and results!
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