My new A3 / S3 wheel arch liners. With fitting pictures As subject I had been meaning to carry out this mod for a while, but finally got around to it yesterday and today. I was hoping to trim the S3 wheel arch liners and get them to fit, but it wasnt going to happen. So I had to fit the S3 vents into the A3 liners. Hopefully this mod will allow more air to my intercooler and cold air intake, and therefore help with performance. Here are the pictures: S3 vent cut out from the S3 liner Cut out made in the A3 liner to house the S3 vent Backing plate made from off cuts from the cut out to hold the vent flush in place Trail fitting of the backing plate before fitment Trial fitting of the vent before fitment Vent bonded with Stickaflex and screwed in place Threads of the self tapping screws removed from the rear The remains of the S3 wheels arch liners LOL The finished article from the front The finished article from the rear, as you can see where the threads of the self tapers have been removed they have been painted to prevent rust The finished article in place Another picture of the finished article in place So what do you think?