HKS SUPER SQV (Sequential Blow-off Valve) is a blow-off valve that uses a unique two-stage sequential valve structure using a primary valve and a secondary valve, and uses a differential pressure control system to delicately control pressure in a wide operating range from low to high supercharging ranges.
[Compatibility]
●Honda Civic Model: FK7 Engine: L15C Year: 17/09-19/12 MT, CVT compatible, suction return kit included
●Honda Civic FC1 L15B 17/09-19/12 MT, CVT compatible, suction return kit included
*Please check the manufacturer's website for the latest compatibility information
Made in Japan
In addition, the ``reliefless operation method'', which differs from the general blow-off valve structure, suppresses relief during turbocharging and maximizes the charge response when repeatedly turbocharging and releasing by turning the throttle ON/OFF. SQV IV supports all turbo cars in a new dimension.
With suction return
[Appeal & Recommended Points]
●Vehicle-Specific Design + Suction Return Kit Included
This SQV4, model number 71008-AH010, is specifically designed for Honda Civic FK7/FC1 L15C/L15B turbo models (September 2017 – December 2019) and is compatible with both manual and CVT transmissions. The package includes a suction return hose (which routes excess pressure back to the intake system, just like the stock configuration). This consideration ensures both sound quality and regulatory compliance after installation, making it a highly attractive feature.
●Wide-Range Response & Stable Boost Control with Reliefless + Sequential Structure
The Super SQV IV adopts a “differential pressure control system” and a “pull-type relief method.”
With its two-stage sequential structure, the primary valve opens at low boost, and the secondary valve opens as boost rises, allowing rapid and linear response to throttle ON/OFF across low to high boost conditions.
●Improved Engine Response
Reduces wasted boost pressure that would otherwise return to the turbine when the throttle is closed. Efficiently controls boost accumulation and release, improving throttle response. This provides a more enjoyable driving experience, from city driving to winding roads, with responsive acceleration.
●Distinctive, Eye-Catching Sound & Visual Appeal
Features a characteristic “high-frequency, sharp operational sound.” When venting to the atmosphere, it produces a clear sound, giving a strong presence in the engine bay. The triple-fin design also enhances visual appeal.
●Durability & High Quality
Constructed from die-cast aluminum, including the secondary valve section made from metal die-cast. Designed to resist deformation and wear even under severe conditions.
●Environmental & Regulatory Considerations
With the suction return kit, excess pressure can be routed back to the intake system like the stock setup. Unlike vent-only “bumpers for sound” designs, it accommodates users who want lower noise levels or compliance with regulations and inspections.
●Clear Installation & Compatibility
Compatible model years and engine types are clearly specified. Fits turbocharged Honda Civic FK7/FC1 L15 models from 09/2017 to 12/2019. All necessary components (hoses, etc.) are included as vehicle-specific parts, minimizing modification or adjustment.
[Summary]
For owners of Honda Civic FK7/FC1 L15 turbo models who want to improve turbo response while reducing unnecessary boost fluctuations and losses, the HKS Super SQV4 71008-AH010 is an extremely attractive option. With vehicle-specific design and suction return kit included, it caters to users who value sound, appearance, and performance. Its reliefless and sequential structure ensures stable operation from low to high boost. Perfect for drivers seeking both comfort in city driving and thrilling response when pressing the accelerator. If you want to upgrade not just the sound but also overall performance and responsiveness, this model comes highly recommended.
