VW MOTORSPORT
- https://www.vwracing.co.uk/ - this is massive VW Motorsport video library containing material since 1986
CAR BUILDING AND RESTORATION
- http://dutchbuild.com - Hi-end 4motion conversions, SSP's, Haldex controllers, amazing restoration/fabrication skills and even more. A must!
- http://www.build-threads.com - A very nice idea to gather all the best builds around the world.
- http://www.engineswapdepot.com - Cars, boats and almost any swapped unicorn can be found over there.
- https://www.facebook.com/Haidea-1065609513484243 - Audi Golden era (Group B) related B2 builds.
- http://www.propontiac.com - Pontiac build from Sweden with high custom-made level.
- https://www.facebook.com/Elan-Motorsport-662026323873874 - Elan Motorsport from New Zealand. The masterpiece where E21 BMW has saved only it's look.
- http://www.forum-auto.com/marques/ferrari/sujet676.htm - Ferrari Testarossa resurrection.
- http://www.914world.com/bbs2/index.php?showtopic=133908%20 - Porsche 914 transformation into track toy.
- http://papadakisracing.com/ - Papadakis racing - ultimate car builds for various categories of motorsports.
ENGINES
- http://www.stevemorrisengines.com/ - Steve Morris individually built engines.
- http://engineering-info-park.blogspot.lt/2010/12/plain-bearing-materials.html - engine bearing properties explained.
- http://www.gti-vr6.net/wiki/index.php?title=GTI_VR6_Wiki - Many things covered about VR6 issues, things to know, etc.
- http://forums.vwvortex.com/showthread.php?5417830-FAQ-Links-DIY-Reference-Table-of-Contents-1.8t - 1.8T owners would find it useful.
FORUM BOARDS
- http://speedtalk.com/forum/index.php - Engine geek place.
- http://www.clubgti.com/forum.php - A must for all of the GTI owners.
- http://forums.ross-tech.com - Nice forum for anyone owning genuine Ross-tech VAG-COM interface.
MAGAZINES
- http://www.racecar-engineering.com - News, technologies.
- https://www.highpowermedia.com/c/31/race-engine-technology - Technology geek edition.
- http://www.onallcylinders.com/ - Tips, tricks, articles about engines, etc.
- http://www.superstreetonline.com/ - News & reviews.
- http://www.dsportmag.com/ - Both online and paper magazine for people who cares about performance.
DOCUMENTATION/LEARNING/REFERENCE
- http://vwts.ru - Great source for VAG schemes, documentation and self learning material. The site itself is in russian language.
- http://www.volkspage.net/technik/ssp/index1_eng.php - Self Study program (SSP) - VAG - 1 to 100
- http://www.volkspage.net/technik/ssp/index2_eng.php - Self Study program (SSP) - VAG - 101 to 200
- http://www.volkspage.net/technik/ssp/index3_eng.php - Self Study program (SSP) - VAG - 201 to 300
- http://www.volkspage.net/technik/ssp/index4_eng.php - Self Study program (SSP) - VAG - 301 to 400
- http://prsearch.planetvag.com/ - VW & Audi PR code decoding tool
- https://www.enginebasics.com/ - Engine basics explained
- http://www.turbo-product.com - Turbocharger listing by vehicles.
- http://www.dieselevante.it/index_it.asp - Turbocharger reference.
- http://www.turbo.ee/?lang=eng&id=11 - Turbocharger reference.
ELECTRICS
- http://www.loam.org/vw/Vanagon/VanagonProTraining/DigiFant - Digifant I & Digifant II reference.
- http://www.not2fast.com/VAG/InjectorCup.html - VAG fuel injector cups.
- http://www.clubgti.com/showthread.php?219775-Fusebox-FAQ - VW CE1 & CE2 electric systems reference.
- http://www.a2resource.com/index.html - Model guide, color guide, electrical systems, pinouts explained, details of any tranny available for Golf mk2.
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http://www.corrado-club.ca/tech/vwecucodes.htm - Plenty of data regarding Bosch ECU part number.
- http://s4wiki.com/wiki/Tuning - Useful URL for anyone who wants to tune their Bosch ME7 ECU's.
- http://en.wikipedia.org/wiki/DIN_72552 - DIN72552 is standard for automobile electric terminal numbers.
DRIVETRAIN/GEARBOX
- http://www.clubgti.com/showthread.php?220814-THE-Mk2-Golf-Definitive-Wide-Tracking-Thread - ultimate thread that helps you if you want to make your Golf widetracked.
- http://www.clubgti.com/showthread.php?115595-VW-Audi-Seat-Skoda-FWD-Gearbox-codes-and-ratios - VW/Audi/Seat/Skoda gearbox codes and ratios.
ENGINE DESIGN TOOLS
- http://www.maxracesoftware.com/PIPE395.htm - PipeMax.
- http://www.schmidtmotorworks.com/engine_designer.html - Engine designer software by Schmidt Motorworks.
- http://www.buildandclick.com/html/4t_header_wizard_.html - 4T header wizard design software.
- http://www.proracingsim.com/dynomationmainpage.htm - Engine simulation software.
- http://mez.co.uk/mezporting/exhaust_length.html - Exhaust pipe lenght calculator.
- http://www.wallaceracing.com/header_length.php - Header length calculator.
- http://performancetrends.com/ - manufacturer of various software for racers and tuners.
- http://icengineworks.com - Cool tool aimed to exhaust header design.