HIRO63

What is db level of C63?

1. Stock C63
2. X-pipe
3. Straight pipe
4. Double X-Pipe
5. Header without cat
6. Header with cat
etc

In Japan you must be under 98db. What is laws in other countries? MB dealer cant take any car that is over 98db cant even fix one part. My car has double X-Pipe and they said that my car is 110 db. Is there any thing I can do bring this number down? I dont want to take X-Pipes out.

They got this number of 110 db inside of warehouse so I just thought that doing inside of warehouse and outside is totally different number. Inside sound gets really loud. Do you all think that if I check the number outside make any different?

superlubricity

I took a db reading on two cars at our last dyno day; one C63 with catless MHP long tube headers and one C63 with MHP long-tube headers and high-flow cats. Both exceeded the meter's maximum db level of 125 db.

I'll meter my car this weekend if I have time.

HIRO63

125bd!! Wow that is loud! What rpm was that in? In Japan they test it at 3000rpm. It will be great if you can meter it this weekend. Thanks

patboyy

must be. MHP long - tube will be the loudest

superlubricity

That was WOT on the dyno. Not sure the RPM, but I imagine closer to the top of the range.