Ive never felt the re-map I had has been that satisfactory and i'm thinking of having my 320D E46 de-mapped but before I do this i'd like some feedback.
Three things have made me think a de-map may be the best way to go.
1)After having the remap the engine sounds different. Maybe this is just diesel knock, however, it doesnt purr as it used to.
2)Yes, there is improved acceleration etc.,but it not as good as it was when I used a tuning box. The acceleration is patchy or bitty with a big whoosh when the turbo kicks in. With the tuning box it was very smooth through the gears, the improvement in acceleration was down the line, and better.
3)The final reason I am considering a demap is that my fuel consumption has gone up substantially. I was averaging about 43.8 mpg but its now gone down to about 39.8 mpg (despite driving economically). This is a reduction in fuel economy of about 10%
I spoke with the people who did the re-map. Theyve got a good reputation. They double-checked the remap to see if it had loaded amiss which it hadnt. Im thinking about going back to the tuning box.