These are all those other tables in the same place as where you make the MAF Cal changes. You're going to want to end up with your KOEO boost as close to 0 as you can get.įor the 845 MAP sensor, you need to change three sets of MAP Scaler tables, found in the Sensor Cal folder. With the Key On & Engine Off (KOEO) note what it reads for boost. Dashboard gauges can be set through Options>Gauge List. Through the View menu, set Dashboard so you can view Boost. > Bring the laptop to your car, fire up ATR and connect it through your AP to the ECU. Mazdaspeed MAP Harness - Bitwise Motorsportsįor ATR (not sure if VT is same terminology) This harness will convert that connector into a more standard Bosch connector for use with a wider range of MAP sensors. The OEM Mazda MAP sensor uses a proprietary connector.
Plug-n-Play Mazdaspeed MAP Harness - $60 shipped Home » Shop » Sensors » Pressure Sensors » Bosch 3 Bar TMap Map Sensor with IAT No soldering, plug n play, completely reversible to stock, and can be re-sold later as a kit if you stock out. There was a premium price since the MAP used by Mazda not only reads boost pressure, but has a built in Temp sensor, which even now, years later, is a nice touch, and fairly unusual in the USA.įrankly, it was both expensive & a PITA, and that kept many people from making a very intelligent upgrade. In the past this meant trying to find an overpriced sensor,usually in the range of $90-$125, and then having to cut the OEM plug off and solder the wires for the correct plug. This is important even if you want to run boost pressures around 19-20psi, since the throttle cut and fuel cut settings will be at or beyond the point in the stock sensor range where things get fuzzy, so they may not work consistently, work as expected, or even work at all.
If you want to accurately see pressures in that range or over, regardless of BT or K04, it's a wise idea to upgrade to at least a 3 BAR sensor.
The stock Manifold Absolute Pressure sensor (MAP) is a 2.5 BAR unit, which tops out around 23-24psi, and looses accuracy around 22-23psi. This thread was originally posted on MSF back in October of 2012 by MAP sensor is what the ECU uses to read boost pressure.