Chalky. said:

the NNN ecu I take it is the later one usually run on 15p? MSB is the sealed one that you cannot remap from outside?

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Yes and yes... though the NNN can be remapped for Eu2(10P) but i've seen a few and didnt run as well as with the MSB... it's a hardware difference which IMO can't be 100% "overridden" with the remap... also the map's version is extremely important as well... a NNN remapped for Eu2 on injector durations is a bodge and if you dont watch te EGT it can hurt the engine on a long run.