Hang on a minute, I think this is a
big misperception. The Emira does
not have an older/lower state of tune compared to the Evora GT or GT410. To the contrary, based on everything I have read and watched and heard, both from Lotus and from those who have been in direct conversation with Lotus, this is a further iteration and tuning development of the same drivetrain.
Matt Windle's comment to camera at last year's Goodwood about it being "actually 416" reflects that. There's no way he would have been so confidently or immediately responsive in that way in that moment if they were in the process of intentionally de-tuning the Evora drivetrain for the Emira application.
The real story is almost certainly the most boring one. Their fully developed drivetrain configuration didn't meet all of the rapidly changing global emissions requirements that they were saddled with during mid and late stage development, and in order to hit the emissions targets and requirements set by worldwide jurisdictions (and by Geely for as much production standardization as possible) they were forced to lower the redline slightly to achieve both goals.
If that all holds true in the delivered product (and I honestly believe it will), the performance below redline should be a further refinement of the tuning delivered in the latest Evora that used the same supercharger. So for everything except the very last quarter-second of extra rev before a 10/10ths full throttle redline shift,
the driving experience should lack nothing.
I'd love to see dyno graphs from the two cars produced in identical conditions, and overlay the torque curves to compare directly... now THAT would be a clear and valid comparison, with direct experiential implications. That's by far the easiest and most appropriate way to measure and validate tuning developments.
Until proven otherwise by dyno plots I think it's safe to assume that the most significant difference is the perception of the specs on paper. It's the numeric change that really bothers people. Which is a fair complaint, to be sure, but it doesn't necessarily reflect anything substantive about the actual experience of driving the car.
The substantially increased weight of the Emira compared to the Evora is a far more performance-significant difference between the two products, and in my opinion is more deserving of criticism than the horsepower number. I get that adding comfort and easier repairability naturally adds weight, but it's added a sizable jump in figures that I didn't expect, especially considering Lotus's historic weight-impact-on-dynamics focus and the contemporary competitive example of the Alpine A110.