PHILRS6+ wrote:Now you have had both fitted is there a big difference between the two?
Are the non res too loud?
Yes, there is definitely a difference. For me there is less of a difference in overall volume, but more in terms of quality of sound. I found the non-res to be very boomy and intrusive in the cabin, which got very annoying. Both are loud outside the car, especially with the catless downpipes that I have fitted, but I find the resonated centres to have a tighter, more pleasing sound, where the non-res sound boomy and flabby, almost like your exhaust is blowing.
The main issue, and the reason why I suspect many owners are dissatisfied with the resonated centres is that the RS6 is so well sound insulated, that you just don't get the aural effect of the exhaust inside the car. I can guarantee though, that from the outside it's a different story.
All the centre silencers do on the resontated pipes is reduce resonance and boom, the overall volume is very similar IMHO.
Hope that helps,
Mart.
C6 RS6 Plus with a few sensible mods...