I wouldnt say the DD reads low, it reads what your putting down.
My first tune by Steve Shadows netted me 201Whp. Pretty much the same setup minus 740cc injectors, PFC and 12-14psi. My stock SII RB25 netted me 212.Point is don't expect much from a stock JDM engine out the box, least you have a baseline to see your progression.
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