IMO Turbo mufflers lose thier sound over time and start to sound ricy on the Alero.
I had the SLP muffler on mine and after a few years it just started to sound ricy. The dual 44's I have on the car now do get slightly raspy around 3500 and more so @ 4000, but by 6000 the sound isn't too bad.
I have a video on YouTube and listed what RPM's the car is at in every frame
http://www.youtube.com/watch?v=5n5QqNYpxS4
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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