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Hondata Fuel System (2017-2021 Civic Si) HON-FS-1.5-DENSO

Hondata Fuel System (2017-2021 Civic Si)

  • Increase Fuel Flow by 35%

  • Incorporating Both Hardware and Software

  • Increase Power Output to Over 500 HP

  • Camshaft, Fuel Line, and Fuel Injectors Included

$2,595.00 $2,600.00 $2,600.00 /
On Backorder Only Available Available 40+ in stock Available


The Hondata fuel system was created specifically for the Honda L15b turbo, incorporating both hardware and software components that increase fuel flow by 35% compared to stock. By installing this system, your 1.5 turbo Honda can safely and effectively increase power output to over 500 hp, with reliable engineering and thorough testing. The Hondata 1.5 fuel system accommodates customer-installed modifications such as turbo upgrades and flex fuel, which often require more fuel flow and can result in fuel limitations and boost limitations. With the Hondata fuel system, you can achieve maximum power and run full E85 fuel without any need for blending, while maintaining fuel pressure. This system has undergone rigorous testing over the course of several years and tens of thousands of miles.
2017-2021 Honda Civic Si
view install guide HERE
High Flow Fuel Injectors & Clips
High Flow High Pressure Fuel Line
Injector Fly Leads
FlashPro software includes the mod for injector and camshaft support
There is no warranty stated or implied due to the unusual stress placed on competition product(s) and/or the inability to monitor their modification, installation, and use, unless otherwise stated. In such case, Hondata warrants all products to be free of defects in materials and workmanship for normal use and service for a period of (30) days from date of retail purchase. 

As of September 01, 2018, the warranty on these specific Hondata products is extended to one year from the date of retail purchase: s100, s300, KPro, FlashPro, Coil Pack Retrofit (CPR), excluding: Harnesses 
(For any issues with 4 or 7 bar map sensors, the end user must contact us directly for further instructions.)  

*This will still need to be approved by Hondata Management. State and Federal laws may supersede this. *  

Parts returned must be determined by Hondata to be defective before any warranty credit or replacement is issued. Hondata’s obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges. Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. 

Products purchased from unauthorized dealers, or with the serial number missing, removed, or altered, are not eligible for warranty service. Proof of purchase, in the form of an invoice or sales order, may be requested. 

Hondata shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed because of the failure of any part, including claims for delay, loss of profits, or labor. Hondata shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty. There are no other warranties expressed or implied extending beyond those set forth above. 

All software must be used in accordance with the respective software license(s). 
Some products are not legal in California for off-road vehicles only and should NEVER be used on public highways.