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The PCM has a boost limit that will cause it to go into a defueling mode. If you put a chip or tuner on, it's pretty easy to hit that overboost point. What boost foolers do is prevent the MAP sensor from ever seeing too much boost, and thus preventing an overboost situation with the PCM. Depending on your PCM, it will defuel when it sees either 22 psi or 24 psi.
The PCM has a boost limit that will cause it to go into a defueling mode. If you put a chip or tuner on, it's pretty easy to hit that overboost point. What boost foolers do is prevent the MAP sensor from ever seeing too much boost, and thus preventing an overboost situation with the PCM. Depending on your PCM, it will defuel when it sees either 22 psi or 24 psi.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.