Wow, an immediate impact after installing the BBK 86mm Mass Air Meter!
I had previously installed the BBK 78mm Throttle Body along w/ a K&N 57 Series Air Intake kit.
I did previously see a noticeable performance gain - BUT after that install the 4.6L had noticeable hesitation & bog.
However, once I installed this BBK 86mm Mass Air Meter the engine immediately ran better without any bog nor hesitation!
Replacing the Mass Air Meter is must when installing an aftermarket throttle body!!
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