Kia Stinger
Staff member
Boost by gear: Enter amount of boost reduction in 1st, 2nd, or 3rd gear. Very useful for improving traction on RWD vehicles. We generally run 5psi in 1st, 1psi in 2nd, on our GT on stock tires to avoid wheel spin during launch mode. This reduces boost in 1st gear by 5psi, and reduces boost in 2nd gear by 1psi. You can reduce boost below factory levels as needed.
Fuel Bias: Used to fine tune fuel control. As of v7 firmware these settings are not required and only enabled if FutureUseD bit 1 is enabled. Values of 80 across the entire power band will match the internal default mapping, going lower target a richer air/fuel ratio while higher will target a leaner air/fuel ratio.
Map6 Boost: Allows you to enter a customized boost profile. You'll enter only peak boost over stock here, so 6.0 means add a maximum of 6psi over stock, at that RPM point. The JB4 will blend this request with pedal input, engine temperatures, etc, to provide a smooth mapping.
FutureUseD BIT settings as of v7 firmware:
bit0 - Turn on to disable JB4 fuel control, also required for accurate AFR logging if fuel wires are NOT installed
bit1 - Turn on to enable fuel control adjustment by RPM, default values of 80 across will match internal mapping. With default setting JB4 uses internal settings for fuel control.
bit2 - Turn on to disable JB4 hot/cold water & oil temperature protection
bit3 - Turn on enable IAT/timing spoofing, requires wire added to JB4 harness and 6cyl setting for spoofing level
bit4 - Unassigned
bit5 - Unassigned
bit6 - Turn on if vehicle has an aftermarket flash map loaded to the ECU
bit7 - Unassigned
Fuel Bias: Used to fine tune fuel control. As of v7 firmware these settings are not required and only enabled if FutureUseD bit 1 is enabled. Values of 80 across the entire power band will match the internal default mapping, going lower target a richer air/fuel ratio while higher will target a leaner air/fuel ratio.
Map6 Boost: Allows you to enter a customized boost profile. You'll enter only peak boost over stock here, so 6.0 means add a maximum of 6psi over stock, at that RPM point. The JB4 will blend this request with pedal input, engine temperatures, etc, to provide a smooth mapping.
FutureUseD BIT settings as of v7 firmware:
bit0 - Turn on to disable JB4 fuel control, also required for accurate AFR logging if fuel wires are NOT installed
bit1 - Turn on to enable fuel control adjustment by RPM, default values of 80 across will match internal mapping. With default setting JB4 uses internal settings for fuel control.
bit2 - Turn on to disable JB4 hot/cold water & oil temperature protection
bit3 - Turn on enable IAT/timing spoofing, requires wire added to JB4 harness and 6cyl setting for spoofing level
bit4 - Unassigned
bit5 - Unassigned
bit6 - Turn on if vehicle has an aftermarket flash map loaded to the ECU
bit7 - Unassigned
