N/A tuning is notoriously hard, especially without other supporting mods, so I would be sceptical about a 28bhp increase in power on that alone with no decat, flowing of heads, camshaft, etc...
I'm sure it'll optimised some parameters, and I don't mean to sound negative, but just bracing you to not be crestfallen expecting such a big jump. Is he denoting before and after?
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