It was WELL worth it. I had it remapped and dynoed.
The dyno came out with almost the same numbers but the way the car pulls now from 70-80km/h and all the way to the top is much better that before.
I can recomend a bigger IC and a remap after that.
I have bought a DPF removal pipe to be fitted after christmas. And then another remap :-)
'06 E91 330dA Sparkling Graphite|19" AvantGarde M359 Satin Black|335i brakes|Bilstein B16 IRC|Powerflex|GroundControl|Wagner|Ecotune|Turbo Dynamics|Zimmermann