Audi TT nozzle size/flow rate question

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Hi all,

I've got an Audi TT 225, which is stock, so about 221bhp/207ftlb at the fly. I brought a WI kit a few years back for an old VW Corrado G60. Its a dual stage kit, and has 1 x 1gph nozzle and 1 x 2gph nozzle. I am getting the car remapped soon (claims up to 45bhp/80ftlb increase, so around 266bhp/287ftlb).

So, is there a set calculation or amount that should be flowed thru for the power, or can anyone let me know if this flow rate is going to be enough?

Many thanks.