CDTi is the official reference for the remapped versions that MGR produced when they woke up to the fact that the CDT was capable of producing a lot more power (it already did in the BMW in any case). I suspect that perhaps BMW didn't want the CDT to compete with the 3 series so held it back so to speak. The ECU had a different software map to give the extra beans, the hardware remains exactly the same. This remap was (is?) available as a dealer software upgrade, but the Ron box effectively does much the same.
|