Those are 4" ports... should be tuned around 33hz,, I have a extra set of 3" aero's. What tuning range would i be in if I added the 3" aero's to my box?
didnt try the psp site calc? all i was really saying was w/o cuttin my ports and using 3 over the 2 that it gave me around 7hz increase intuning....all mine are the length they came.....
Are you talking about replacing the two 4" aero's with a pair of 3" ones, or adding the 3" ones to the existing 4" ports? You aren't very specific in your post.