Originally Posted by alcheng

Then I will suggest you can stay with the OEM speakers for now....

I once change the HU for the bimmer I drove, the new HU is more than enough for the OEM speakers and the sounds is improved.

But when I replace the speakers, my friend, who runs a shop, told me unless the upgrade includes an Amp along with better speakers, otherwise there's no difference....

I still replaced the speakers w/o putting in an Amp..... and the result was.....

Keep the speakers if you are not going to put in an amp... a good HU is enough for the OEM speakers...