Tuning a port relative to fill

**dreamofinsanity69** · **12-06-07, 11:13 PM**

If for example i had a 200l box and was able to squeeze another "40l" out of it with fill, do i tune the port to work for a 200l or 240l box?

**DevilDriver** · **12-07-07, 10:33 AM**

Quote:

dreamofinsanity69 wrote:

If for example i had a 200l box and was able to squeeze another "40l" out of it with fill, do i tune the port to work for a 200l or 240l box?

240L as that is your effective Vb.

**brent_s** · **12-07-07, 08:47 PM**

The trick is actually achieving the desired effective volume via fill. Nousaine's research suggests fill gets less effective as box size increases. Getting an additional 20% out of a 200l box may be tough.

-Brent

**dreamofinsanity69** · **12-08-07, 06:47 PM**

Right on well i have a roughly 200l box and i was wondering how to do things right so maybe with 80% fill i could tune port for a 220l volume? wont make much difference between the two volumes it seems.

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