re-tune

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    HKS Fcon-S

    hi, one of my friend's friend is selling his used HKS Fcon-S (3 yrs) for a relatively good price, just want to know did anyone try this before? his mods are quite similar to mine, is it necessary for me to re-tune it again? I would prefer the Apexi PFC, but as this used one price is much lower...
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