Hi all,

I have a few questions:

1. With the stock APS TT setup, the file given by TurboXS on their Website has all zeros in the boost table. If I want to have maps with different max boost , how is it done?

2. How is the boost table used? I guess one needs a MAP sensor? Can the stock APS sensor be used somehow?

Just trying to learn...

Thanks!

 

you need a TXS MAP sensor , plus you'll need a boost control solenoid, and run software version 2.8

 

Great, thanks! I do have the DTEC boost control selenoid (DTEC-BCS). Anyone has sample boost maps? Please, I'm trying to learn this stuff and I'm sure it would be helpful to others too.

Another question: I have the TurboXS MAP sensor that directly plug into the UTEC. In the software (v 2.8d), there are two parameters that I need to adjust according to the Spec sheet that came with the MAP sensor:

- MAP Calibration (gradient): set to 112 by default (value from 1-300)
- MAP Calibration (intercept): set to 169 by default (value from 1-300)

The Calibration card that came with the MAP Sensor has two calibration INPUT values (1158 and 1731) and two calibration OUTPUT values (7.70 and 20.59). What do I need to input to the UTEC software?

Thanks again for any insight.

 

I think I found the answer to my own question in the manual:

"MAP Calibration
1. To calibrate the MAP sensor you need an accurate boost/vacuum gauge (note that 0 psi is
atmospheric pressure), a UTEC and a PC.
2. Turn ON the ignition but do not start the car. Record the pressure reading (P0) in psi on
the gauge and the MAP value (M0) under logger #4.
3. Start the car.
4. As an alternative measurement for P0. Place the engine under vacuum and record the
pressure reading (P0) in psi on the gauge and the MAP value (M0) under logger #4.
5. Place the engine under boost and record the pressure reading (P1) in psi on the gauge
and the MAP value (M1) under logger #4. Try to find a stable reading for this in boost.
6. Ideally the two measurement points should be as far apart as possible.
7. The gradient is calculated as follows;
Gradient = 1000 * (P1 – P0) / (M1 – M0)
Note that this number is rounded off to the nearest whole number.
8. The intercept is calculated as follows;
Intercept = ((Gradient * M0) - (1000 * P0)) / 100
Note that this number is rounded off to the nearest whole number."

I'll try it out and see what I get.

 

That does not help much! How am I supposed to used the numbers on the Calibration card that is provided with the UTEC MAP sensor?

 

I'll rephrase my initial question:

With the stock APS kit and the UTEC instead of Unichip, how is max boost adjusted with the software?

Thanks!

 

I haven't played with the boost tuning...yet. I can't help you there.

As far as the cal card that came with the map sensor, you should be fine with the preprogrammed values. Your gradient is: 110. Your intercept is: 167 for the values you gave in the post above.

But if you want to figure it out for yourself..........use this: