*Black Edition* Carrot Top Tuning Blow off Valve (BOV) MK4 MKIV A4 S4 1.8T 2.7T
Suitable for most turbo cars with an Air Flow Meter.
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
All Carrot Top Tuning Dual-Piston Atmospheric Valves have been designed and built with the intent of venting 100% of the residual charge air remaining in your forced induction system to the atmosphere at throttle lift. While we have incorporated many elements into the design of the Dual-Piston valves to aid in their compatibility with mass air-flow sensor equipped vehicles, we cannot always guarantee that each individual’s application will be compatible with a valve that vents the charge air into the atmosphere.
Carrot Top Tuning nor any of it’s Authorised Distributors can assume any responsibility for any adverse effects resulting from the installation of this valve onto a vehicle whose engine-management-system, whether factory or aftermarket, is not capable of compensating for the loss of metered air through a vent-to-atmosphere valve such as this.
Product Disclaimer: This product is not designed to meet any emissions/noise standards and is not for street or highway use. This product is not certified and may not be legal for use on emissions-controlled vehicles in any country/jurisdiction. Any other use, including recreational off-road use, may be in violation of local, state, and federal laws. Carrot Top Tuning does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the customer. Carrot Top Tuning will not ship CARB restricted products into CARB restricted areas under any circumstances. ***OFF-ROAD USE ONLY***
Product Disclaimer:
Emissions Equipment Tampering Warning: In many states, tampering with your vehicle’s emissions equipment is unlawful. Our products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road or highway.
Using our products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists (more information can be found on the SEMA Action Network website www.semasan.com/emissions for state-by-state details in the USA).
CARB-Restricted Areas: CARB-Restricted products, will not be shipped to state of California under any circumstatences.
Official Air Resource Board Link: ARB State Adoption Link
Customer Responsibility: It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using, or installing any of our products.
By proceeding with the purchase and use of our products, customers affirm their commitment to adhere to the terms outlined in this comprehensive product disclaimer. We reserve the right to update this disclaimer as necessary.