Cold Air Intake (closed lid) vs More Air (open lid)?

open lid 3rd gear

4th gear open lid

I tested vacuum in my moded 3″ Ram-Air intake.

3″ straight into the moded K&N Filter….

Tested the closed K&N lid with K&N Filter including plug. >> nearly -0,2bar vacuum

Then without plug. >> less vacuum, maybe arround -0,16 or -0,17bar

Then with stock lid.  >> arround -0,1bar

So, the intake ist still a little bit restrictive, maybe without any filter housing it would be even better.

Press the clutch @200kph, the velossa gave a little “boost”, maybe 0,025bar into the fully seald intake.

I guess the cold air from the velossa will help while cuising.

But only the air through the Velossa isn’t enough.

btw. tested in 3rd and 4th gear, similar results.