Note: The SAI Solenoid has to be turned off using Tuneboy or TuneECU. This product has been developed as a performance upgrade, check with local regulations prior to purchasing and installing this part. Not DOT approved. Laws concerning this product vary from state/province to state/province. Your state/province may prohibit its use on public roads or restrict its use to novelty, show use, off road areas, or race facility areas only, in some states/provinces off road use are also prohibited. The manufacturer and retailer assumes no responsibility for any use or application of this product in violation of any applicable law. Before installing this product, please check your state/province and local/municipal laws and regulations. For off road use, not legal for registration for on road use in California.