my setup is Ramair oversized air intake Intake runner flap delete Rs3 LPFP RS4 fuel valve Bartek roller kit hpfp Vis stage 1 HPFP internal Vis balancer delete Aluminum S3 intercooler 3inch Downpipe with 200cel Sportkat DV+ Engine code is CDLG from a golf 6 ed35 sits DQ25 my tuner cant get more more hp than 335 and 441 nm he says the following We made the tuning as powerful as possible and the data logs clearly showed that increasing the timing causes more knock, which has a negative effect on maximum power.