Turbosmart BOOST CONTROLLERS – ELECTRONIC - e-Boost2 (2005-current) – Complete User Manual - Manual (Page 29)

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If the bOF or rOF is set to zero there will be no off and the buzzer circuit will remain closed until boost or RPM drops below the rOn or
bOn value. If using a boost setting RPM values should be set to zero to turn off or visa versa. Setting these parameters to zero will
disable them as parameters.
If rOn, rOF, bOn and bOF values are entered, the alarm will sound when either the boost or the RPM value is reached and will turn off
when the boost or RPM drops below the set point or both values reach there respective bOF and rOF values.
dS (Delayed switching)
This function is for use with set point switch logics ISP/ESP/SSA/SSB and is designed to create a delay between set point switching
and activation. The time delay will be between when a subsequent set point is switched and when it actually changes i.e. the current set
point will continue functioning until the time delay has elapsed. dS1 in boost group 1 applies to the time delay when switching to SP1,
dS2 in boost group 2 applies to the time delay when switching to SP2 and so on. To use time delay between set point switching and
activation, dS must be ON. In the SETUP Parameter Menu you can activate or de-activate this function. If this function is de-activated
all menus relating to the time delay are hidden from the Boost Menu i.e. dS1 – dS6 in respective boost group. Once dS is activated in
the SETUP Parameter Menu, you can enter the delay time in the Boost Group.
Note: Activating SSC/SSD and SSE also brings up the dS parameter in the boost group. Refer to section 5.6 for further details on the
set point switching logic and what this parameter applies to.
COr (Boost correction)
This function is use to reduce or eliminate boost drop off at high RPM. Switching this function on will display the boost correction menu
in the boost group menu. This function is best performed on a chassis dyno where the graph of the boost curve can be displayed and
accurately interpreted.
The boost correction function requires 3 parameters to work; the START RPM, the END RPM and the correction factor.
START RPM (RP1): This is the engine RPM at which boost begins to drop off.
END RPM (RP2): This is the engine RPM at which you want to turn off the boost correction function, normally set at redline.
Correction factor (FAC): The percentage at which boost is dropping off between the START and END RPM.
Example:
The following boost curve shows that between 5000 and 7000 RPM, the boost drops off from 15 PSI to 10 PSI.
To reduce or eliminate this boost drop off, you need to input the following values:
RP1 = 050 (5000 RPM)
RP2 = 070 (7000 RPM)
FAC = 100 - [(10 ÷ 15) X 100] = 33
Boost curve after COR is setup
Boost curve before COR is setup