You are actually able to bend Ti quite well, just no tight bends. Here's an example of my late M3s exhaust...

Goes into a couple of nice bends, then the rest are pie cuts...
And please make sure to get those mounts right....

Pic of Ti Mid-pipe on M3. Ti is strong but brittle. Mounts were a little off and Ti just CRACKED under the stress and heat. Sucked
