Engine cover

I don't like diesel engines. They stink, vibrate and sound like a tractor. The C6 has a particulate filter and hydraulic engine mounts, so that's the stink and the vibration taken care of. Although not has loud and rattly as a 4 cylinder engine, the V6 on the C6 still has a tractor noise when cold at idle.

I didn't have the idea to deaden the car, so I removed the engine cover as it was easier and added Dynamat Extreme under the original sound proofing on the engine cover just to attenuate the noise.

Engine cover without part of the sound proofing
Engine cover without part of the sound proofing

I added as much Dynamat as I could only under the original sound proofing so it would look stock when removed.

Engine cover with Dynamat Extreme
Engine cover with Dynamat Extreme
Engine cover with Dynamat Extreme
Engine cover with Dynamat Extreme

After adding Dynamat Extreme the original sound proofing was put back in place, making sure no Dynamat was visible.

Engine cover with the original sound proofing back in place
Engine cover with the original sound proofing back in place

I could already hear some differences. Before doing this I measured the noise levels at idle with my phone, It was 46dB and now oscillates between 45 and 46dB. Doesn't seem like it, but it's a big difference. When revving the engine the noise is also very muffled now, but I'm sure something more can be done.

Citroën C6
Done in 02 of June, 2013 at 16:30
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Meet the C6
Meet the C6