V 8 blubber, but how?

Hello together ! Drive a w 126 sec 4.2 liter for almost 10 years now would like to change a little bit of the sound…..should keep a bit more blubbering or get a kerneler suction-gray. Have already a stainless steel exhaust exhaust from Kat from Reuter-Motorsport, but am nen bisi released from the sound of this exhaust system. My question now to you, can I change what air filters technically to raise a higher suction noise or can I do something on the exhausts….?