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Fuel cut / Boost cut

JH32

By JH32,
in Engines & Forced Induction

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MegaGTS4 Proficient

MegaGTS4

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JiMiH,

The standard ECUs (computer) have a safety measure incorporated to prevent potentially dangerous overboost and when it senses higher than normal boost levels and it will cut the fuel supply (you will usually experience hard backfire at this time).

Most turbocharged vehicles have an electronically controlled boost pressure sensor to stop the vehicle from overboosting and damaging an engine. This built in safety system is controlled by the ECU. The ECU looks at the input signals from the factory sensors and determines if there is a an overboost condition, the ECU then temporarily shuts off the injector pulse to the injectors. A boost/fuel cut eliminator will readjust the factory preset levels to allow for higher boost, just setting the level to a higher boost point before the injectors are shut off. Other than fitting a eliminator you can also remap the ECU or purchase one that is already remaped.

MEGA

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https://www.sau.com.au/forums/topic/4924-fuel-cut-boost-cut/#findComment-76976
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