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DerBayer80
2 years ago

No, it won’t. The car must never be louder than entered in the papers.

What happened is that there is a frequency shift, so that the whole subjectively feels louder than it actually is.

Christophror
2 years ago
Reply to  DerBayer80

That’s just wrong. A car is measurably louder by a sports exhaust. Not only is the frequency shifted. Most cars are clearly quieter than the statutory requirements. This means you still have room at the volume.

DerBayer80
2 years ago
Reply to  Christophror

No, it won’t. The volume measurement takes place in a very narrow window. Within the window it must not become louder than in the papers and this value the manufacturers are already completely irritating. Outside this window it can be minimal. A good example is the folding systems that were still permitted from work a few years ago. Within the test cycle, all are top in the values. But under full load, they can roar like a deer because it doesn’t matter.

A change by 1db corresponds to a doubling of the volume…

Christophror
2 years ago

The manufacturers do not fully irritate these values. For comfort reasons alone and thus an older exhaust, which becomes minimally louder, does not become the diarrhea for the TÜV. These tolerances are used by sports exhaust manufacturers.
Your statement with the DB is more complete.
Source:

https://www.lfu.bayern.de/buerger/doc/uw_34_laerm_messen_bewerten.pdf

Page 2

Tjrovennett
2 years ago

The typical cnatters and tubes come naturally from changing the exhaust and leaving the muffler away.

Only a few-cylinder, volumes of motor vehicles

grisu2101
2 years ago

Yeah, mostly.

But let it go, it’s out-of-the-box money, and if I hear that guy with 1.2 liters capacity… Like a 2-stroke mofa :-)) How desired and not skillful !

Then you better spend the money for reasonable things.

Sandofix
2 years ago

Hello

The entire noise path changes, even in idle, e.g.

Greetings

Sandofix
2 years ago
Reply to  Emmely684

The engine start has only a slight influence at the back, it is possible if someone at the back stands that it then sounds a bit dull and not so bright, it jumps on, the noise is certainly different.

TweetGSXR
2 years ago

Normal already