the amp is decent- i think. Its an older pioneer one- not sure on the model code, but hasnt been a problem when i have run it previously in my old vl. The amp is screwed into the sub box on top, and it just sitting in the boot. If the fuel pump is the thing on the right hand side of the boot, under the plastic cover- no it isnt, the sub is on the left hand side, the gap is slightly larger so the sub box can be pushed back further, using less space. The earth on the head unit is located im the transmission tunnel, right ner the shifter. Could that be the problem? it isnt as noticable when i only run the sub and no speakers. The noise also increase pitch (like how high the noise is) as my revs gain.
any help is appreciated
thanks
Pete