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arnosvale65 · 25th July 2015, 13:08

I am sure I read somewhere that driving a cdti below 1500 rpm is like driving an old lugger as the turbo cuts in a those revs. I been getting poor fuel returns (38-41mpg on a run) and I was advised to keep it above 1500 if possible. My engine really doesn't do anything until I hit 2000rpm and then it takes off like a rocket. When should it do this 1500 or 2000? I have been driving it very carefully in the past but now I am driving it harder to see if it makes a difference.
While on the subject I am really beginning to notice the difference between this manual and my old auto. Lots of strange noises one of which sounds like a thrust bearing issue, on deceleration, which is the opposite of what I would expect. I get a whining noise when I switch the AC on too but it works like a dream and has no leaks.
I have just noticed all these things as I have done my first long run in traffic going to Cornwall and back. I may have to go back to an auto soon!

25th July 2015, 13:08	#1
arnosvale65 Posted a thing or two 75 facelift CDTi Connie SE Tourer. MGF 1.8 VVC Join Date: Jul 2014 Location: bristol Posts: 1,424 Thanks: 176 Thanked 176 Times in 119 Posts	At what revs should the turbo kick in? I am sure I read somewhere that driving a cdti below 1500 rpm is like driving an old lugger as the turbo cuts in a those revs. I been getting poor fuel returns (38-41mpg on a run) and I was advised to keep it above 1500 if possible. My engine really doesn't do anything until I hit 2000rpm and then it takes off like a rocket. When should it do this 1500 or 2000? I have been driving it very carefully in the past but now I am driving it harder to see if it makes a difference. While on the subject I am really beginning to notice the difference between this manual and my old auto. Lots of strange noises one of which sounds like a thrust bearing issue, on deceleration, which is the opposite of what I would expect. I get a whining noise when I switch the AC on too but it works like a dream and has no leaks. I have just noticed all these things as I have done my first long run in traffic going to Cornwall and back. I may have to go back to an auto soon! __________________ Onwards and upwards. MGZT-T MK1 front and rear ends fitted, specialist- components in line thermostat mod done, retro fitted cruise control, Mk1 real wood dash fitted, real walnut steering wheel fitted, Pioneer DAB radio fitted.