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searched high and low does anybody know where i can get a bigger throttle body gotta buy a new one anyway so just figured i might as well buy a better one
 

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The 2.8 and 2.9's have a slightly smaller TB. I can attest to this, because I have swapped mine out with a 4.2. They are definitlely not the same.
 

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If you have the I5 the throttlebody is the same as the I6. Swapping the I6 TB onto the I4 nets some gain but you need a tune to correct for it.
 
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