M Performance Exhaust on M135i/235i

[SFO]

Has anyone installed one of the above on their 135i/235i?

What is it like? Worth the money?

[SFO]

DeltaTango said:

Yes had mine fitted 2 months ago (M135i). Really pleased with it. The cost is hard to justify and it isn't THAT much louder, but I have no regrets.

what does it do the exhaust sound? Is it just volume? Does it change tone or anything else?

what was the cost?