I have the exact same issues diesel knock low revs smooth when revved hard,i have added some 2 stroke a few days ago done 100 mile since and not noticed a differance.one thing i have noticed it sounds better when the window is down ie outside.Also i agree with you regards the engine sounding better when cold which is very strange.My 110 is only 2 month old and has cover 1600 miles.
It is not so strange because with the engine temp increase, the ECU change a lot of parameters ie ignition advanced, quality of pre and post injection (yes the fuel injection is developed during 5 single injections activities).....
Remember that Land Rover for mantain the "right" combustion also with bad fuel changed the timing vs the original Ford Transit set-up.
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9th Mar 2012 12:13pm
