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Discussion Starter #1
How big can i go before i have to bore into it??? Also what is the stock size??
 

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You can go...

70mm no problems. No point in going to a larger TB though,unless
you do some serious mods to free up your 4.6's breathing...
like PI heads and true dual exhaust - waste of money
otherwise.

You're better off going to an 80mm GT MAF and a Dennis
chip - 'til you do domething about the breathing...
 

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I wouldn't go with a TB until I had an aftermarket MAF. It really makes little difference.
 
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