I've got the fabspeed catted DP coupled with a Dinan catback and can't get enough. The sound is perfect now - a lot more turbo spool noise and butt dyno says low down torque is more immediate. Under spirited driving the cracks are very loud and overall produces a much raspier howl
I got it from
mike@x-ph.com, delivered in 7 days. Strangely the receipt in the box was under $1000 AUD?
If anyone is in Sydney and wants a listen before pulling the trigger let me know.
Re warranty and downpipes, its the tune to remove CEL that causes warranty issues. This is why I chose Fabspeed over Wagner which is preferred by local suppliers but have plenty of reports of CEL. All the cat does is block out smell and comply with emissions. BMW will struggle to draw any relation to any other part of the car bar the exhaust.