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Throttle Body Changed to 82mm Bosch


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This is not trivial and something I wouldn't recommend as the results can be dangerous or cause random stalling/ETC limp modes to kick in at inopportune times. You need a dyno to calibrate it safely. Ensure you check things like cruise control work correctly afterwards.

Best bet is to compare a 5.0 and a 4.0 strategy and see what tables Ford change and why. You could also try checking the FG Boss 315 cal with the large oval throttle body which I believe is B8RH, BBLH or B8LH (not 100% which one it is).

There are book on calibrating the pressure drop/surface area calcs for electronics throttle bodies you can read as well.

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