F80 M3 S55 DOWNPIPES CATLESS DOWNPIPES FITS: BMW M3 M4 S55 Description F80/ F82 M3 M4 S55 DOWNPIPES WHY UPGRADE YOUR S55 DOWNPIPES? Catless downpipes are considered a standard upgrade for any F80 M3 owner looking to safely push their S55 engine beyond basic Stage 1 tuning. With Stage 2 and up tuning, higher boost increases back-pressure at the OEM catalysts and chokes the S55's turbochargers, causing them to work harder and shortening their life. Click image to enlarge Pictures sell! Auctiva offers Free Image Hosting and Editing.250+ Listing Templates! Auctiva gets you noticed! The complete eCRATER Selling Solution. Track Page Views WithAuctiva's FREE Counter
