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Increase horsepower and torque with this 34 inch P2R Throttle Body Spacer Tests on a 06 Civic Si produced a 45 horsepower gain at the wheels Our spacer comes equipped with a 18th inch NPT threaded por ...
was looking at the intake gasket, but just looked at the tb spacer and this is what i read theres a DOT in between the two.

Tests on a 06 Civic Si produced a 4.5 horsepower gain at the wheels!
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