TBI big bore

tbi_big_bore
tbi_big_boretbi_big_bore_dims
$349.99 each

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Get the most HP out of the stock TBI intake by installing our T.B. Big Bore kit.  The stock throttle body is bored out to 51mm and a new brass butterfly plate is installed for smooth operation and great air sealing.

Add bigger injectors and turn up the boost with less restriction, but don't forget to use a good stand alone ecu when making all these upgrades to the g54b. 

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