VtecSlayer
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2025 Honda Civic Type R Build
Wanted to share some details about the ongoing build of my 11th generation Honda Civic Type R FL5, which has been a life long passion project for me. I'm really excited about the modifications I've done so far and the ones that I'm planning in the near future.
Here's a breakdown of the parts installed and the upgrades made.
PRL Charge Pipe and Intercooler
To start with, I've installed the PRL charge pipe kit and upgraded intercooler. These two components alone have made a significant difference in performance, enhancing airflow and improving the overall cooling efficiency.
PRL High Volume Intake (HVI)
Next up, I've added the PRL High Volume Intake (HVI). This intake system has really opened up the car’s breathing capabilities, allowing for better throttle response and a noticeable increase in horsepower. The sound it produces is also a great bonus and helps give you that turbo whoosh noise that you're looking for!
PRL Rear Motor Mount
To ensure all that power gets transferred effectively to the wheels, I've installed a PRL rear motor mount. This upgrade has significantly reduced engine movement, resulting in a more solid feel when accelerating and shifting gears.
Acuity Shift Bushing Kit
Shifting gears has never been smoother thanks to the Acuity shift bushing kit. This upgrade has provided a much more direct and precise shift feel, making each gear change feel more satisfying and controlled.
PRL Titanium Inlet Pipe, TSP HEDP 5" Downpipe, and Front Pipe from PRL
Recently I've installed the highly anticipated stuff such as the Titanium Turbo Inlet Pipe Kit from PRL along with their 3" Front Pipe. In addition, I've added the 5" High-Efficiency (400 CELL) Catted Downpipe with the PTP Hybrid blanket. Had to sell my left nut ? to get these parts lol jk but they were totally worth the money spent on them that's for sure!
Titanium Strut Tower Hardware & Turbo Inlet Hardware
For weight reduction purposes I've swapped out the OEM steel alloy hardware on the front Strut Towers and Turbo Inlet cooling line with anodized Burnt Titanium hardware.
Hondata FlashPro w/ Custom Tune Calibration
I've gone to the dark side and have utilized the infamous Hondata FlashPro tuning module to set a custom map tune on the vehicle specific to the mods installed and it's now crushing it!
Heat Management
Living in South Florida means dealing with extremely high ambient temperatures for much of the year. To combat heat soak and maintain consistent performance, I've focused heavily on heat management throughout the engine bay.
I've installed a Dream Automotive hard-lagged turbo heat shield and paired it with a PTP Hybrid Blanket on the downpipe.
In addition, I've applied Funk Motorsport gold reflective tape in strategic areas along with gold heat shielding on the turbo cooling lines to help reduce radiant heat transfer.
My IAT2 temperatures are typically averaging between 66°F and 74°F even during the hottest days. Idle temperatures while stopped remain the biggest challenge, but additional cooling upgrades are helping improve thermal management overall.
The temperatures measured on the turbo heat shield and downpipe blanket average around 87°F, which is extremely impressive considering the temperatures generated underneath during spirited driving.
WOT Performance Cooling Plate
To ensure optimal cooling under harsh conditions we installed the Cooling Plate engineered by Wide Open Throttle (WOT).
As the build continued to evolve, I upgraded the exhaust system to better support the increased airflow demands of the 27WON Kuro+ Turbocharger. The setup now consists of the PRL Titanium Turbo Inlet Pipe Kit, PRL 3" Front Pipe, and an Innovatig 4" Catless Downpipe.
While the previous catted downpipe performed exceptionally well, the move to the larger 4" catless downpipe provides significantly improved exhaust flow and reduces backpressure, allowing the upgraded turbocharger to operate more efficiently. This helps evacuate exhaust gases more effectively, improves spool characteristics, and maximizes the overall performance potential of the turbo system.
Combined with the PRL inlet and front pipe, the entire intake and exhaust path is optimized to support higher horsepower levels while maintaining excellent drivability and responsiveness.
27WON Kuro+ Turbocharger
To maximize the turbocharger's efficiency, the supporting exhaust system was upgraded with an Innovatig 4" Catless Downpipe and PRL 3" Front Pipe, helping reduce backpressure and allowing exhaust gases to exit the system more freely.
The turbo has completely changed the character of the car, delivering strong mid-range power and impressive top-end performance while maintaining the refined driving experience that makes the FL5 such an incredible platform.
HKS Super Sequential Blow-Off Valve (SSQV)
Not only does it provide the unmistakable HKS sound that enthusiasts know and love, but it also delivers lightning-fast pressure relief between shifts. The result is crisp turbo response, reduced compressor surge, and an even more engaging driving experience every time you get into boost.
Full Race High Pressure Fuel Pump
This upgraded pump delivers over 60% more fuel volume compared to the factory unit, providing the fueling capacity required for higher horsepower applications while maintaining consistent fuel pressure under demanding conditions.
Hondata 1530cc Fuel Injectors
Supporting the upgraded fuel system are a set of Hondata 1530cc fuel injectors for the Civic Type R platform.
These injectors provide substantial fueling headroom and work seamlessly with the upgraded high-pressure fuel pump, ensuring the engine receives the precise amount of fuel needed under both daily driving and wide-open throttle conditions. Together, these upgrades create a robust fueling solution capable of supporting future performance goals.
Hondata CANFlex Fuel System
To fully take advantage of ethanol-based fuels, I've added the Hondata CANFlex Kit for the 11th Gen Civic Type R.
The CANFlex system allows the ECU to continuously monitor ethanol content and automatically adjust fueling and ignition strategies based on the fuel blend present in the tank. This provides the flexibility to run anything from pump gas to higher ethanol blends without requiring separate calibrations or manual map switching.
Radium Engineering PCV Oil Catch Can Kit
As boost levels and cylinder pressures increase, it's common for oil vapors from the crankcase ventilation system to make their way back into the intake tract. Over time, this can contribute to carbon buildup, reduce combustion efficiency, and contaminate critical intake components.
The Radium catch can system is designed to separate and capture these oil vapors before they can re-enter the intake system. This helps keep the intake tract, intercooler piping, and combustion chambers cleaner while promoting more consistent engine performance.
Given the increased airflow from the 27WON Kuro+ Turbocharger, upgraded fueling system, and E60 calibration, adding a properly engineered catch can was an easy decision. The Radium kit integrates beautifully into the engine bay and provides an extra layer of protection for a build that's designed to make serious power while maintaining long-term reliability.
It's one of those modifications that may not add horsepower directly, but it plays an important role in preserving performance and protecting the investment made throughout the rest of the build.
Hondata FlashPro with Custom E60 Calibration
Most recently, the custom tune has been revised and is now optimized for an E60 ethanol blend.
After extensive data logging and fine-tuning, the car is now running exceptionally well with excellent drivability, strong power delivery, and consistent performance throughout the RPM range.
The combination of the upgraded turbocharger, enhanced fuel system, CANFlex integration, and custom calibration has truly brought the entire build together.
Check back later for more project build updates!
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