Update on my AW11 - It now has a Magnex stainless steel exhaust system and a Pipercross Viper Induction Kit. It doesn't drone at all and instead it makes a much better sound under load and at high RPM. Feels about 10% more powerful and you get flames!

Stock 4AGE 16v engine, just very well looked after (serviced every 5k since 1989). Running mobil 2000 semi synthetic and a TRD oil filter) Will be upgrading cams and adding a lightweight flywheel soon which will essentially make is as quick as the supercharged version (Around 135hp at the moment will take it up to 145-150 depending on cam profile) :)