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2022 Model 3 Performance (premium audio) tips to 1300w 5 channel amp

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Hello everyone. I have 1300w audio control DSP amp from my previous car. I was wondering if using that much power would drain a lot of power or not. I've also seen builds that have 2nd 12v batteries instaled, is this nessessary?
 
I put two Phoenix Gold Ti21600.5 amps in my '21 M3P. I did not install a second battery though it wouldn't hurt. I used the relay/resistor to make the car not respond negatively. I don't think you'll have any issues.
Any possability you have photos from your install? Also what relay/resistor did you use, is this something installed by the factory or was this an addon?

Thanks for the reply by the way!