Ultimaker 2 rewind - up to marlin&e3d

[ManuHC 0]

Hi,
I made an extruder bowden with my friend  and replaced the printer head (ultimaker 2 standard) with a 1.75 mm e3d v6

I modified as much as possible the open source marlin that I found online all along I wanted to understand if there are better alternatives and if someone uses the direct titan extruder

 

eliminating bowden creates so much difference in the quality of the printer? speed area etc?

 

Thank you so much and sorry for my bad English
:)

Manuel
Bye