*When ordering, you must provide your KTuner serial number in the notes section during checkout. New tune orders are fulfilled via email every couple of hours throughout the business day.*
**This tune is for KTuner ONLY and is not offered for Hondata FlashPro**
Two Step Performance and Derek Robinson are back with their Stage 2 Fuel Fuel Tune for the 2017 Civic Si! The tune offers an additional 88 whp and 121 ft lbs of torque in comparison to the factory ECU calibration!
A flex fuel setup including an ethanol content sensor and KTuner flex fuel converter is REQUIRED to use this tune. You are not limited to using the PRLFlex Fuel Plug and Play Kit, but they make a great pair!
Factory boost level in "Map 1" allows for easy "valet" mode when the KTuner unit is unplugged from the car!
Premium fuel (91 or 93 octane) is REQUIRED for gasoline use. Ethanol content should be limited to 30-40% when blending E85 with gasoline. (35% recommended)
An aftermarket clutch is STRONGLY recommended, as the stock clutch will not survive this torque level.
This tune is designed only for use with the factory turbocharger and is not suitable for used with upgraded turbochargers.
Dyno testing performed on a 2017 Civic Si with ClutchMasters FX400 and KTuner FlexFuel converter setup (stock airbox/filter, stock downpipe/front pipe, stock exhaust, stock intercooler, etc). More power/torque can be seen with better cooling and higher flow bolt-on parts.
Suitable for use with the factory intake or a QUALITY aftermarket intake that keep fuel trims in check such as the PRL Motorsports Cobra. Aftermarket downpipes are also fine.
This tune is for the 2017+ Civic Si with a flex fuel converter only. Please be sure you are purchasing the correct tune for your vehicle because digitally delivered items are non-refundable. (If you buy this for your 2016 Civic LX, it won't work, and we cannot offer a refund.)
TSP Rewards
Purchase this product and earn $4.90 towards your next purchase!
Just had my civic Si clutch replaced with the RV6 flywheel and exedy stage 0 clutch due to the stock one starting to slip. Still very early in the break in period that is recommended so I have not done any hard launches or shifts yet. I do really like the feel of this new clutch as it’s very close to the stock feel but has a little more sturdy feel to it. Can’t wait to really test it out once I hit the break in mark.
the best purchase i ever made, didn’t even think it was going to be that loud but it made a huge difference. so much louder and deeper with more pops, revised my tune and can feel a power difference! i have a 2018 honda civic si coupe, with an aftermarket MAP exhaust, MAP cold air intake, muff and res delete, and now the high flow catted skunk2 front pipe and down pipe!
