engine noise

[pretty_ricky302]

ok just hook up a new system setup in my car. Now I have engine noise. Whats the best waht to solve this. I tried the filter. Didn't work, ran the rca on the opposite side of the power wire didnt work. Ground/wiring is fine b/c my old system neva made the noise. The only time i get the noise is when i hook a amp to the sub and a amp to the hi's. Someone told me it could be the radio. Which is the only thing i neva changed.

Is it ok to run to remote antenna of the first amp to the second?
Also i have both amps on the same power cap.

[90accordman]

ground your RCA's it should go away

[Turbo Dave]

ground ground ground ground, make sure everythings grounded or get bigger cables like monster cables.

[GSteg]

Reground your ground wire. If your ground works before, it doesn't necessarily mean it'll work now because any equipment changed in the car, especially if you go with a bigger amp, will have different requirements. Surely if you ran 1 feet of 8 gauge ground to your previous amp, doesn't mean it'll work with your new map that puts out 2x more power .