Just had a look, Possumlink V5 + 44s has only 10 MAP rows between 0-29 PSI.
Approx. 2 MAP rows only between 18-25 PSI.
4.35 PSI between MAP rows too.
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What Tuna is trying to say in plain speak is that in the critical areas of the Link
ECU map such as high Boost*RPM the Link
ECU lacks the resolution to provide the fine detailed tuning you want.