330dMsport

Shadowface I would agree, even in standard spec DTC is fine and should be the default setting. DSC is way to sensitive I can be dangerous if you go for it at a roundabout or overtaking manoeuvre and it begins to cut in, what do you do then. Fuel consumption has gone up slightly after the remap I have now achieved 43.4 mpg over around 4000 miles. I do a lot of motorway driving at the moment even going do to Falmouth the other week on business from Basingstoke. On one journey back from Yeovil at a constant 70 it went up to 47 mpg, but normal driving sees the 43.4 mpg. Happy with that after the Subaru Legacy that did 25 mpg!!!

Ok so a little update after driving for a few 1000 miles. I have now tried with the DTC off and this solves the problem of the engine cutting the power and transforms the car into what it should be. It appears that the DSC is set just too sensitive. When pulling away quickly or applying power while changing direction the engine begins to cut power, which is just ridiculous. Reading the blurb on the BMW site about DTC it indicates you switch DTC on which overrides DSC and allows more slipping of the wheels and yet in the car you press the DTC button and it says DTC off to enable this function? Not to worry it works. I am just not sure why this is not the standard setting for such a powerful car. You can get caught out in an overtake manoeuvre if DTC is not engaged which you have to do every time you start the car!! Can you set this as permanently on?

What is the traction like on the 330d on normal tyres, does it increase the point that the TC cuts in? I was told that the more compliant standard tyres stay in contact with the road better and reduce skipping hence reduce the amount TC cuts in. I have the 19 inch tyres and any compliance would be welcome as it is a pretty harsh ride.

I have yet to give it a good blast with the TC off, so no not really. The problem tends to be when you are driving normally and try to get out quick on a roundabout or junction and the TC cuts in way to easily leaving you a little embarrassed until it sorts it self out. I have had the car since January but it is noticeable that the TC cuts in more easily now there is more torque after the tune. I will give it a go with TC turned off but if it shreds tyres it will have to go back on. Is anybody on here running ordinary tyres instead of run flats on 19 inch wheels? If so is it a great improvement?

I had mine done a few days ago, a 59 plate 330D MSport Coupe. It is obviously early days yet but I asked for the pick up to be improved from a standing start. As it is an auto box it is not possible to spin the turbo up from a standing start so there is a delay until it begins to boost added to the slow take up through the torque converter. This has been improved greatly with the throttle response sharpened up and the auto box appears less lazy. You can definitely feel the additional push when planting it but the traction control light is always blinking and reducing the fun. The engineer told me that changing run flats to standard tyres improves this greatly adding a little more compliance and reducing the skipping which triggers the traction control. I had a Legacy Spec B last and the traction was unbelievable shame the BM doesn't have a limited slip diff!! Fuel consumption appears to be up slightly from 41.5 to around 44 but so far that is only comparing over about 400 miles.