subwoofer noise

I just transferred my sub, amp, wiring,  from my old car to my new car. 2017 chev Malibu, has Bluetooth and a nice stock stereo so I kept the factory unit and added an LOC. The subs are working and amp, but when I drive, and press on the pedal to give gas, the subs start pushing alot of bass, let up on the pedal, it stops, but then if I press on the gas pedal again, bass starts rumbling, loud, this is too loud to be good for the subs and amp, so I have turned off the gain on my bass nob for now when I drive. I have no idea what is going on. All hardware is good where it was in my old car and worked great. Other than the LOC has been added. Thanks for any help you can provide.