Fiesta 2009 1.6 tdci 16valve no cruise control due to gear ratio change

[Maniak8706]

Hi All,

I've changed gearbox on my fiesta from gear ratio 3.37 to 3.05. Since the change my cruise control only works in 3rd gear. The other problem i have, when accelerating in 3rd it pulls strong and 4th and 5th gear it's like i was towing a fully loaded trailer.
I've found map for the same engine with gear ratio 3.05 and when uploaded onto ecu the cruise control works in 3rd, 4th and 5th but feels like engine has no power and smokes badly on acceleration, radiator fun is also on.

See attached original file from my ecu.
I've had a look at maps and managed to find:
1813E6 drivers wish list x6
1C9e12 turbo wastegate
1D6310 EGR map

Can you help me find other maps and how to make cruise control work again.
Thanks

[br556hre]

did your cruise control work from 3rd gear up, before gearbox change, or from 4th gear up?
I will look at your files in next days and let you know - please upload old map (before gearbox swap) and new one that does not work as you expect.
Also write exact ratios for individual gears.