after the optimal .. no increase in power... but also no Decrease... that is to say 140mm is optimal..
but nobody knows what area is optimal... like i said im runnin 80mm which is huge.. and i need more..
but 140mm is huge.. it's just riceball fiqure of speech... biggest throttlebody i have supplied is 100mm~120mm billet on V8 and some 1000hp GTRs(TOPRPM using Q45 infinity TB)


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