Absolutely...
Easiest way to do it is take your overall bend angle and break it evenly into the number of sections you wish to use... the more sections, the smoother the transition.
We use Solidworks to model each individual pie-section, and then lay everything out just to. From there, each piece is laser-cut from the Parasolid file to the exact angle, to within .003". We even etch the piece at 0 and 180 to line everything up perfectly, or they can be offset to create a complex curve...
Here's a Rotary manifold done using 15 degree pie-sections, before and after.
IMAG1047 by SENZA PARI, on Flickr
IMAG1112 by SENZA PARI, on Flickr
Downpipe using 10 degree sections (each bend is 70 deg. for this particular downpipe).
IMAG1318 by SENZA PARI, on Flickr
IMAG1382 by SENZA PARI, on Flickr
And the L28 header we're working on... all pie-cuts. You can see the etch marks modeled into each pice if you look closely.
L28_EXHAUST_HEADER by SENZA PARI, on Flickr
IMAG1022 by SENZA PARI, on Flickr
L28 6-1 COLLECTOR 008 by SENZA PARI, on Flickr
Our last 20B setup...
IMAG1614 by SENZA PARI, on Flickr