Default no more 4g after installing new rom?

Hi,
Had stockrom Vodafone (Red 4G) on my GT I9505

After installing:
Kernel-Versie 3.4.76-AOSP
broodplank@bulldozer

Build-nummer
Full jfltexx-userdebug 4.4.2 KOT 49H
eng.broodplank.20140110 test-keys

Android versie 4.4.2

It seems like i don't have 4G connection?

I used to see 3g or 4g signal on top of my phone but now it displays an E or LTE and sometimes 3G.
No more 4G.

I also seem to have a much slower internetconnection (it was fast 4G speed).

Can someone inform me please?
Thanks.
BTW I'm Dutch