port question

[rollin_cc_s10 10+ year member]

i was just wondering how you determine what size opening is best to use. i remember reading something about a 9:1 ratio, but what does this mean?

Click to read more...

 

[rollin_cc_s10 10+ year member]

bump

 

[reneeb7363 10+ year member]

//content.invisioncic.com/y282845/emoticons/read.gif.ff512c499c00ed3faae9a20f4b088b29.gif 's

actually... take advantage of the search features please.

this will get you started:

http://www.caraudio.com/forum/search.php?searchid=1447401