Flex
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Take your 1KD Hilux, Hiace or Prado to the next level with the FLEX R77 Pro 44mm Turbo, a true bolt-on upgrade designed for easy installation, strong mid-range torque and a crisp wastegate note. Ideal for builds targeting 200β250+ RWHP with supporting mods.
β Factory fit: Compatible with standard exhaust and intercooler piping. Bolts to factory manifold.
Comprehensive kit with all essential hardware for installation.
β οΈ CRITICAL: ECU remap required for safe operation. Professional installation and tuning strongly recommended.
Installation notes:
Essential accessories:
To achieve 200-250+ RWHP, pair the R77 Pro with:
Fuel System:
Air System:
Tuning & Monitoring:
Suggested boost: ~28 PSI minimum | Max recommended: 35 PSI (35 PSI actuator included)
For off-road / competition use only. Turbo modifications may affect compliance. ECU tuning required. Check local regulations before purchase.
Q: Is this a direct bolt-on for my 1KD?
A: Yes β bolts to the factory manifold, dump and intercooler piping. Oil drain modification required for proper return flow.
Q: What boost levels should I run?
A: Typical setups run ~28β35 PSI depending on supporting mods and tuner strategy. The included 35 PSI actuator provides headroom for aggressive builds.
Q: Do I need a tune?
A: Yes. An ECU remap is mandatory to manage boost, fuelling and EGTs. Work with an experienced 1KD tuner.
Q: What supporting mods are recommended?
A: +30/+50 injectors, quality FMIC, 3" exhaust, upgraded intake and professional tuning are essential for 200-250+ RWHP.
Q: What power can I expect?
A: With proper supporting mods (injectors, FMIC, exhaust, tune), 200-250+ RWHP is achievable. Results vary based on build quality and tuning.
Q: Do I need the VNT simulator module?
A: Highly recommended. The VNT simulator deletes the ECU stepper motor, simplifying the setup and eliminating factory VNT control issues.
Q: What's included in the coolant line kit?
A: The coolant line kit is available separately and provides proper coolant feed/return for the turbo. Check product listings for details.
Q: Will this work with my factory intercooler?
A: While it will physically fit, an upgraded FMIC is strongly recommended to handle the increased airflow and boost levels for best performance and reliability.
Q: How does this compare to the VNT 44mm?
A: The R77 Pro uses an internal wastegate (simpler, more reliable) vs the VNT's variable geometry. Both are 44mm and capable of similar power, but the R77 Pro offers easier installation and tuning.
Q: Can I install this myself?
A: If you're mechanically capable, yes β but professional installation and tuning are strongly recommended for best results and reliability.
FLEX R77 Pro 44mm. Direct bolt-on. Internal wastegate. 28-35 PSI capable. Complete kit included. Professional tune required.
Disclaimer: Common Rail Cowboys is not affiliated with Toyota Motor Corporation or FLEX Thailand. Installation should be performed by a qualified technician. Professional ECU tuning is mandatory. Proper installation and supporting modifications are the buyer's responsibility.
