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      03-01-2009, 11:56 PM   #35
Second Lieutenant
JPH's Avatar

Drives: E92 M3 Coupe
Join Date: Feb 2008
Location: Chicago

iTrader: (0)

Thanks on the canisters, AA says fully adustable but, good to hear from someone else. I am totally obsessive/compulsive with things (especially expensive things) being symetrical. I would also tend to agree on resonance, any system that increases volume will increase resonance on some level. but, I am fine with a little.

Will PM you with some questions but, as for an answer on which one....I do not think you can go wrong with either but it may come down to price.

Originally Posted by dcstep View Post
Good analysis JPH.

You raise a point about the canisters not looking the same height in pictures. I measured mine from the ground and they're the same on my coupe. Unless the pictures are taken from exactly the middle an optical illusion may make one look lower than the others.

IMHO, the resonance at 2,000 rpm is there with all systems. Before my reports, AA guys were saying there's no resonance. Well, I heard it and measured it, both stock and AA Signature. I think that the owners of all systems downplay the noise. My reported 1 dB is very small, but real. BTW, my cars sets off alarms in both my office and apartment garages.

Ok, you've done the analysis, which will you buy. Will you flip a coin to decide?

I don't think that you'll go wrong with either.