The original 5psi tune was optimized for the stock intake manifold. The GTR conversion was done and was retuned and optimized. That is the most comparable you can get. It's a straight apples to apples comparison. This is what people can expect to make as far as gains on low psi tunes. The dyno's carry similar signature attributes to GTRs and similar attributes that I saw on my GTR conversion before rjm. These are legit numbers and real world results.
Throwing on a whole new intake system is going to to dramatically change your afr. We saw that with mine... And I wasn't going to spend another $600+ for a retune on my old tt kit. So my numbers will be probably the max you can expect out of the kit.
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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054
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