DFW40 10+ year member
CarAudio.com Veteran
Has anyone tried the new dimpled 4 inch port from partsexpress. Has golfball like dimples to increase airflow I just ordered one I assume it works better or else they would have not made them I will try it in my bandpass which has the regular 4 inch to see if makes any difference on portnoise or tuning etc. Precision Port Dimpled 4" Flared Port Tube Kit 268-353