
Originally Posted by
Strat Fan
I think the Alfa engine has a much "bigger & deeper" sound than the Dino engine due to is longer stroke.
Even with the Gp4 silencers fitted then there is a fair amount of exhaust noise, adding reprofiled cams increases this level.
Running a 3.2 on ITB's and reprofiled cams with open pipes certainly makes the earth move (and your neighbours ornaments).
As the revs rise and the load increases then the note sweetens and is maybe less offensive but on tickover then they are loud.
Even with the Gp4 silencers fitted then the previous car we had on the rolling road received complaints from their neighbours which was apparently a first for them.
I think Vince also got some complaints at Silverstone a number of years back when he fitted the straight through pipes to his car?
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