Recent Blog Posts

by Phearable Staff

Introducing the Stage 2.5 RACE Honda Civic Si Flex FuelTune For Ktuner.
Compatible with 2022+ Honda Civic SI 1.5L Turbo Vehicles.

- Compatible with various intakes including STOCK INTAKE, PRL HVI Street, other stock size. (Choose intake when ordering)
- REAL DynoJet results 270 HP 338 TQ on E30 (PRL HV Intake, PRL Flex Fuel Kit, RV6 FK8 Clutch Upgrade, Catted Downpipe)
- REAL DynoJet results 246 HP 292 TQ on 93 octane (PRL HV Intake, PRL Flex Fuel Kit, RV6 FK8 Clutch Upgrade, Catted Downpipe)
- Requires an upgraded clutch & flex fuel kit that outputs a 0.5-4.5v scale to the ecu
- Revhang Disabled
- Artificial Knock Control Rise Disabled
- Optimized Fan Control Parameters
- End User Adjustable Sensor Disables
- Custom Ramped First Gear Boost Limit For Traction
- Advanced VSA (User adjustable)
- Optimized Throttle Responsiveness
- 6800 Rpm Revlimit
- Launch Control at 3200 rpms (User adjustable)
- On The Fly Map Switching (User adjustable)
- 3 Adjustable power levels on the fly using cruise control buttons:
Level 1: Low Boost ~16psi 91/93OCT / ~18psi E30
Level 2: Medium Boost ~23psi 91/93OCT / ~25psi E30
Level 3: High Boost ~25.5psi 91/93OCT / ~27.5psi E30
*Power level target is the same with or without sport mode enabled.
**Maximum boost pressure target is an approximation, and may vary due to atmospheric conditions and other conditions.
Note: For use with a stock turbo only. An aftermarket turbo will need a custom tune.

Fuel Octane:
Optimal power is achieved on E30 (blend 91/93 octane with E85).
Tune automatically adjusts if you use only 93 octane. Quality 91 octane can be used.
Use of lower quality fuel may result in elevated k.con values which will increase knock retard.

How to check your ecu's software version or find your ktuner serial number (click here).

Tune Revisions:
If you change your vehicle's modifications, we offer a tune revision service. Details can be found by clicking here.
Note: Your modifications must be compatible with the tune you purchased

Note: All sales are final. If you order the tune for a vehicle other than a compatible vehicle you cannot be refunded.
Tune files are not transferable. Support is provided to the original purchaser only. Tune files are locked from editing a majority of parameters. Tune files do not include any tune revisions or remote tuning.

*PLEASE NOTE: For Off-Road Race Use At Sanctioned Events Only.

Click here to purchase the stage 2.5 race flex fuel tune.