I have a 90bt installed in a 2009 Toyota Camry and Im having some reception issues and I was wondering if anybody could help me. Fm does not sound very good and then when I listen to AM radio and I press on the gas pedal I get this roaring sound when I accelerate. Is there an antenna booster or anything I can do to fix my issue.

I had the same problem. Try going into the AV settings and change the antenna option from power to radio. It made a huge difference for me.

Also if you keep getting engine sounds it could be that you've not grounded the unit well enough.