N55 F20 turbo upgrade

[N55 cpt]

Hi Guys

I am considering a turbo upgrade for bmw m135i f20. I'm not quite sure if I should take the pure turbo stage 1 or the vtt stage 1? Any one have experience on these two choices. Another question does these turbo's look the same as the OEM one's and will the dealership notice that there is a hybrid turbo on the car?

Regards

 

[Rayzor]

I dont have personal experience on the matter but from research you better of going with the pure turbo stage 2 :cartel: