Ok. So the loom is from ebay and non dsp. Yes car came with cd option and dsp.

I pulled the trigger too fast on the loom instead of purchasing retrofit from dealer.

Do I need to trash current loom? Can I retro dsp?

Here's the thing - I'm replacing factory sub. I'm not a fan of dsp. Don't need the echo lol. I know that's not all it does. .

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2005 LeMans Blue e53 4.8is
MODs
///LeMans Blue RBs///Intravee II///Sirius///ACS Spoiler///AiB v3///HID Fogs///LED Tails///
///215 20" Ferric Gray///MTEC Pedals///DVD Headrests///SMG M Wheel///AFE CAI Stage 2