Hi, More of a reference post but I've been having trouble with my FI engine and have trawled the internet for manuals, info and the like so thought it might help other to see what I've found: MANUALS VW Official Troubleshooting Manual Bosch Workshop Manual VW AFC Fuel Injection Service Manual (as found by Birdy) The VW Service Manual as a pdf, (easy to download) Type4.org L-Jetronic Onine Manual PHOTOS Ratwell Photo Library of FI parts WEBSITES Ratwell Double Relay Explanation Double Relay Troubleshooting Nice Double Relay Diagram MORE SPECIFIC ARTICLES AFM Adjustment Article