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800 Posts
Discussion Starter · #1 ·
A friend of mine has agreed to sell my the throttle body off of his 4.6 Mustang (for $35!) and I had a few questions in regards to the Do-it-yourself throttle body swap for the SPI... Since it's not really SPI specific (And since nobody on the forum answered) I figured I'd post the questions here, too.

A) Will it negatively effect my gas mileage?

B) Because it's a 65 MM, will I be FORCED to get an aftermarket intake? (I have a custom one now.)

Thanks guys,

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