I'm running a E91 330d here in Denmark, Scandinavia.
I did a search a little while ago and found a company in South Africa that did conversions of 330d's with a bigger IC and removal of DPF. With a remap they produce aprox 300hp and +700Nm of tourgue
I ordered the IC and got it fitted. It almost is a perfect fit. Some of the internals of the front bumper had to be removed with a dremel, but no big issues. And after install it's VERY hard to even see that theres something changed. I dod not wan't to remove the DPF since the car then will produce a lot of smoke which I dont' like.....
The intercooler i got was aprox double the size of the OEM, and after a remap, the car pulls as a maniac. I don't know how much power it's got now but a guess is aprox 280hp and 640nm. Before the installation it was measured to 265Hp and 602Nm.
The point is, it is WELL worth it changing to something bigger ;-)
'06 E91 330dA Sparkling Graphite|19" AvantGarde M359 Satin Black|335i brakes|Bilstein B16 IRC|Powerflex|GroundControl|Wagner|Ecotune|Turbo Dynamics|Zimmermann