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Does anyone have any insight into the model / engine code of the new NSX? 1991-1997 Engine Code = NA1 (Used c30a engine designated by the VIN number J4HNA1xxxxxxxxxxx) 1997-2005 Engine Code = NA2 (Used c32b engine designated by the VIN number J4HNA2xxxxxxxxxxx)

Hi I've swapped my engine this winter due to a HB failure. Now with the new engine in (JDM unit with 42k km) I've got some issues with lugging with no to moderate acceleration (ECU in closed loop). When I presss the accelerator down, it hesitates a little second before it pulls away perfectly...