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F23A1 Upper Intake Plenum Port-Match Potential/Bore Limit?

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Old 03-22-2015, 08:22 PM
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Default F23A1 Upper Intake Plenum Port-Match Potential/Bore Limit?

Okay before we even get into this question can we please keep this very simple and stick to the facts. And THANK YOU ALL in advance for any, and all, replies/input regarding this question.

So my question is this:
What is the MAX diameter that one can bore a F23A1's upper plenum in order to port match it with a larger TB? In other words, how far can I go before I run out of metal and begin cutting into IAC and vacuum ports? And for anyone who doesn't know the stock bore is 60mm.

Again thank you all for your help, in advance, it's greatly appreciated.
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