Originally Posted by Br0
No, I don't have to trim anything except the diffusor because fittment isn't 100%.
I have an MSport e92, the e92 does NOT require trimming of the bumper for performance diffusor, only the e90 requires trimming of the oem Msport bumper to fit the performance diffuser.
Are you sure? I was under the impression that any mtech bumper requires the trimming that I linked. From what i've gathered the only way you don't have to trim is if you have the performance rear
Edit: Never mind it seems like I might be wrong and you don't need to cut for the E92