Hmmmm, tricky. Not sure if this helps, but I've been looking at running throttle bodies with mine on a socketed P30 ECU where some of the sensors will be useless so we (well mainly the guy putting my engine together) was going to switch off the sensor and run the engine on the TPS and revs so it must be possible. Can your tuner not do anything on the map? If our engines don't run the same sensors as the USDM version then I'd guess it can be turned off in the code?