Hi Chris, just at the rear, cats and dpfs still in place(I'd love to get shot of them as well tbh), weighted the backboxes as well 14.5kg in total!
I've previously owned the D3 3.0tdi and had this done by the same company however there was an audible drone if I was honest (although tolerable) at 60mph this was over 2000rpm and overall was louder on idle.
The 4.2tdi though at 60mph no resonant drone at all, just a very faint increase in exhaust sound. If you plant the foot though you get a more aggressive tone and you can definitely tell it's a V8. It's almost Like Audi wanted to disguise that it was a V8 diesel, I think it sounds great. I would have thought getting a 4.2tdi that would be a down grade for you coming from a 6.0 w12 some beast that car! The cats and dpfs do a lot of muffling so I hear. Would an X pipe be of benefit do you reckon?
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