EPIC 766HP Audi RS4 B5 Antilag Sounds & Drag Racing! Drag & Track by turboandstance - May 6, 2019May 8, 2019 During an event on Ambri Airport they filmed this epic tuned Audi RS4 B5. The engine has been rebuilt, stroked from 2.7L to 3.0L displacement, the whole engine has been built, from pistons to connecting rods, cylinder heads and valves. It has 3 "Downpipes without Kats and 3.5" Exhaustsystem, transmission