also, heres a few scores that my customers have done with these ports in MECA, metered@headrest with termlab
Matt wilson, 2010 AS1 world champ(while using the flare). 2 dc xl 12's, 1 8" flare, did a 146.x. in as1, he had a 30 amp fuse. did 149's in as2.
josh phillips, as2, did 149's in jmc jimmy. 1 18" btl n2, mojo 4000. 1 8" flare. and a 128.x in drive by
chris releford had 4 4" psp flares, switched out to a single 8", jumped from 146.8 to 147.5. with a single 12"
me, ive done a 149.6 with my first blowthrough setup, 18" nightshade, audiopipe wired @4, with lots of rise, seen about 2000 watts. and 1 single 8" flare. did 150+ from 40hz to 53hz with my autotek 4000, wired@1.
theres been a few more thats been on the meter, cant remember them all.
These ports deffinitely help with spl, sq, hits lower lows. They are pure ***