Vehicle: 1985 Audi UrQ
Engine: inline 5 2.1 litre, ~9:1 compression using 79.5mm pistons from Austrian market turbo engine
Injection: Port injected, 300cc lowZ injectors (0280150200), fuel rail made from shortened BMW rail.
Description: BMW 745i K27 compressor side bolted on to make K26/K27 hybrid. Ignition and idle controlled by original ECU which provides rpm input to MS. Dave cap mod had to be used to prevent rpm spikes. Running 1 bar boost for now. Atmospheric venting BOV now possible without any issues. TPS fitted but original idle switch was retained for proper idle control.