MikeMartel Posted October 17, 2011 Report Posted October 17, 2011 Alright so basically iv got an 18" BTL N2 in my 2004 impala, because this way my first ever build, i built the box a little too small, 5.5cuft. In order to increase efficiency im going to be building it to as close to 8 cuft for maximum output. Anyways my main question is for people with experience with 8th Generation Impalas.. Im going to have sub up, but im not sure which way i should face the port, side or back. Any input is welcome. Thanks guys.
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