Join Date: Oct 2002
Location: Melbourne, Australia
I had an XE that I put a new exhaust on a few years back - I just asked them for a sports system at Midas mufflers. They put one on, I liked the sound but found out by mail 2 years down the track that a copper who had heard my car from the footpath and probably without any noise measuring device deemed my exhaust too loud. Had to get it tested, it turned out to be running at 98dB when a car that old should be no higher than 96dB. They test it at 3/4 the engine speed where peak power occurs. So a stock XE 250 crossflow got measured at 2775 RPM. They also set the testing microphone at about 30 degrees and a foot or so away from the exhaust when testing. Got a hotdog shape resonator installed and it dropped to 93 - but it no longer sounded as good - took away the lovely bark it had.
Next time I buy a non-standard exhaust, I will get it written in the warranty/receipt that it has to be street legal so I have recourse if I cop any crap again.
Yes, I am an agent of Satan, but my duties are largely ceremonial.