RCD510 with VW Fitted Amp Under Passenger Seat - Sub Compatibility.

[LiamGTi]

Hi All,

I have a 2006 Golf GTi with the VW Soundpack which has an amp under the passenger seat.
I recently upgraded my RCD300 to an RCD510. Im wanting slightly more bass, are any options available here with the RCD510 and will the factory fitted amp make this easier or harder?
Any advice or tutorials would be great.
Thank you