Discussion forums for technical topics broken down by category.
Dedicated to the discussion of wheels and tires. This forum is sponsored by The Tire Rack.
Discussion area for general topics regarding suspension tuning. This forum is sponsored by KONI.
Discussion forum for air suspension related topics. This forum is sponsored by Air Lift.
Forum dedicated to discussions about brake upgrades and brake systems. This forum is sponsored by MJM Autohaus.
Discussion forum for topics about body work, body kits and body styling. This forum is sponsored by Dubtechnik.
Discussion area for topics regarding interior work, such as seats, steering wheels, pedals kits, upholstery, consoles, gauge panels, etc.
Discussion forum for everything related to motor oil and automotive lubrication.
Discussion forum for the VAG-COM Diagnostic program sponsored by Ross-Tech
This area is dedicated to all general discussion concerning car audio, video, security, navigation systems, satellite radio and more. This forum is sponsored by Enfig Car Stereo.
Discussion forum for integrating MP3 players, portable CD-players, game consoles, video etc. into your car.
The place to talk about preserving and restoring classic and late-model Volkswagens and Audis.
This forum is for all diesel and TDI owners. This forum is sponsored by KermaTDI.
Discussion forum regarding carburetors, individual throttle bodies, and stand alone engine management systems. This forum is sponsored by INAEngineering
Discussion forum for the 1.8 liter turbocharged 4-cylinder engine found in the Audi A3, S3, A4, Golf/Jetta MkIV, New Beetle, Passat, TT, etc.
Discussion forum for the first-generation 4-cylinder 2.0l turbocharged direct injection FSI engine. This forum is sponsored by APR.
Discussion forum for the second generation 4-cylinder 2.0l turbocharged direct injection TSI (VW) / TFSI (Audi) engine. This forum is sponsored by AWE Tuning.
Discussion forum for the 2.5L Inline-5 cylinder engine found in the new MKV's.
Discussion area for the Volkswagen 2.0 liter 4-cylinder motor. This forum is sponsored by Bahn Brenner Motorsport.
Discussion area for the 2.8l 12v VR6 motor. This forum is sponsored by MJM Autohaus.
Forum for technical discussions about the 2.8l 24v VR6 engine. This forum is sponsored by PAG Parts.
Discussion forum for the 3.2l 24v VR6 found in the R32, Touareg and Audi TT 3.2
Discussion forum for the 3.6l 24v VR6 found in the B6 Passat, Touareg, and Q7.
Discussion forum for the 2.7 liter turbochaged V6 found in the Audi S4 (B5) and A6. This forum is sponsored by Eurocode Tuning.
Discussion area for the 30v 2.8 liter V6 engine found in the VW Passat and Audi A4 & A6.
Discussion forum for the 30v 3.0 liter engine found in the Audi A4 & A6.
Discussion forum for Audi's new 3.0 TFSI V6 supercharged engine.
Discussion forum for the 4.2 Liter V8 engine found in the Audi A6 & A8.
Discussion area for the Volkswagen W8 8-cylinder motor.
Discussion area for the 4 cylinder 16v engines. This forum is sponsored by Integrated Engineering.
Discussion forum for 8v engines below 2.0l displacement.
Discussion area for the G60 G-lader supercharged engine. This forum is sponsored by Bahn Brenner Motorsport.
Discussion forum for the Inline-5 cylinder 10v & 20v engine.
Technical discussion forum for all issues regarding automatic transmissions..
Discussion forum for the DSG/S tronic transmission.
Technical discussion forum for all issues regarding manual transmissions. This forum is sponsored by AP Tuning.
Discussion forum for all things all-wheel-drive.
This forum is dedicated to discussion surrounding various engine and part swaps between different generations of VW and Audi products.
Forum for general discussions about supercharging, turbocharging and anything else related to forced induction systems. This forum is sponsored by US Rally Team.
Discussion forum for everything related to naturally aspirated engine tuning and modifications.
Forum dedicated to topics about stock and aftermarket lighting.
Discussion regarding DIY fabrication of anything you build, bolt, or weld together.
Technical discussion forum for all issues regarding automotive tools and machining...
Discussion forum for all things related to Dyno testing. This forum is sponsored by Genesis Racing & Development.
Discussion forum for all CIS injected VWs and Audis.
Discussion forum for the Motronic Engine Management Systems.
Discussion forum for everything related to water, alcohol, and methanol injection. This forum is sponsored by US Rally Team.