It's a 1.8T from the factory, AUM engine. All the bolt on bits for stage2, downpipe fmic etc and custom map. Dynos around 230bhp/255lbft and weighs about 1800kg with all my tools in the back Is your motor running oem management so you can pull fault codes from the ecu? If so i had a similar issue solved by taking some preload off the actuator. It wasn't releasing right making the ecu see overboost and sticking me in a temp. limp mode - happened on part load/throttle occasionally too. I've since tightened it back up and compensated for it in the n75 mapping. 1.8T's are basically my daily work (not sure if you noticed my reg plate?) so let me know if you want me to take a quick look, i'm only in dordon.