SUCCESS!

Scalerobotics your code worked ok.

I put together a 12f675 , two caps on MPX supply pins , one 100n on pic supply pin one resistor to PC serial RX port and guess....

I get 54-55m ALT here from our MPX4115 project on the desk.

I also turned on my other project with a gps module next to it and I get 54-58m ALT!

PERFECT right on the SPOT!!! I am very please with the result.

May be we must also include a calibration initial setup.

pic settings 4Mhz internal , Clk source Fosc/8 , Define ADC clock 2 (I will try 1 later) and ADC_SAMPLEUS 5.

The only thing left to verify is the accuracy in meters.

I am very happy now!