Using your Rally Innovations front lip splitter is easy. First, make sure your car is parked on a flat surface and the engine is turned off. You can then start the simple bolt - on installation process. Just follow the included instructions to attach the splitter to the front of your Subaru WRX or STI. When it comes to maintenance, regularly wash the splitter with mild soap and water to keep it clean. Avoid using abrasive cleaners as they may damage the powder - coated finish. In case of minor scratches, you can touch them up with a similar powder - coating paint. Remember, a signature is needed when the product is delivered, so make sure someone is available to sign for it.