had a quick chat with gareth last night.
the programmer we use to write the maps can tweak things to keep everything sweet throughout the rev range but ideally to do this properly it needs to be done on a rolling road. the problem that creates with a vehicle of the carlton's age is that the ecu will need to be removed, dismantled and the chip changed each time a different setting is tried.
if an ecu already exists with a suitable map on, it would be possible to copy those settings though
