Boost Sensors: MAP (Pre-Throttle) and Intake Manifold (TMAP) Pressure Sensor Upgrade, Calibration - CustomROM V2
CustomROM V2, if used for Port Injection, Boost Control, Methanol or Nitrous injection requires an addition (note replacement) of the aftermarket higher reading sensor.
OEM 2.5bar TMAP sensor remains installed on the intake manifold (it is not removed/replaced) and continues to be used for Intake Air Temperature (IAT) readings. The plug and play harness bridges the factory TMAP harness with the aftermarket 7bar MAP sensor which feeds the DME a new scaled pressure reading up to the aftermarket sensor’s limit.
7 bar MAP sensor and an OEM TMAP plug and play harness are provided with every REV2 Board order.
WARNING: OEM TMAP sensor is not to be removed unless a plug and play higher reading sensor can be found to entirely replace it which, as of this document writeup, has not been the case.
For those with OEM intake manifolds that don’t have additional taps for manifold pressure sensors like with aftermarket options, we provide an intake manifold take-off fitting that accepts an aftermarket 1/8 NPT MAP sensor.
Check http://www.protuningfreaks.com for fitting details or inquire with sales@protuningfreaks.com.
CustomROM V2 allows for scaling of higher reading OEM as well as aftermarket Manifold Absolute Pressure (MAP) sensor and the Charge Pipe (MAP) sensor.
As for the charge pipe MAP sensor, we recommend using an OEM 5bar typically found on the BMW diesel vehicles.
On our test cars we’ve used both the AEM and the Honeywell 7bar absolute pressure sensors in the Intake Manifold. They need to be calibrated appropriately as shown in tables below.
Example below shows sample values for the BMW Diesel 5bar pre-throttle MAP sensor, as well as the Honeywell / AEM 7bar absolute MAP sensor.
