PLEASE NOTE: All our remaps are carried out using genuine ECU programming equipment.
The Rover SDi is the forerunner of the variant of the L-series engines found on the Rover 25/45 and MG ZS and ZR. Whilst visually similar, the engine management of the SDi is of a completely different type (lower pressure fuelling system and lower specification turbocharger) and thus the tuning/performance enhancing process is also different.
The SDi engines run Bosch MSA-11 engine management, which is a dual processor (2 x Intel 8051) design, accessing maps from a pair of fixed, single time programmable memory integrated circuits. Therefore, to alter the maps on these engine controllers, the original chip has to be removed and read, and ultimately replaced with a memory chip that has been programmed with modified data - a process referred to as chip-tuning or 'socketing'.
Despite the extra work involved to tune, the SDi engines respond very well to chiptuning and can see gains of up to and even beyond 30bhp.