I'm working with a $58 ecu file in Tuner pro. Seems like all of the MAP conversions are kind hosed when compared to Promgrammer. Anyone have the correct math on these?

Thanks much

Steve

 

???
Which table(s) do you mean?.

 

How far off are they? Doesn't Promgrammer show you the math used (bin a bit since last I saw Promgrammer)?

 

When you mention a $58 ECU file, which one is it? Do you have a filename?

(wondering if it is the one I did. . .)

RBob.

 

I'm looking at the PE enable stuff like:

Power Enrichment Threshhold
Primary MAP Threshhold
Secondary MAP Threshhold

The ECU file I'm using is file name 58.ecu (pretty clever huh). I'm not sure where it originated but it is very complete

The MAP conversions are as follows:

MAP= Value * .369004 + 10.35

Promgrammer does not show calcs AFAIK


Steve

 

I believe the above conversion is correct. That is used to convert from an ADC 1 bar MAP term to KPa. Which is the variable used for those parameters. When running a 2-bar MAP sensor this term is converted to a 1 bar value.

This is something that I would typically verify on a test bench, but alas, I don't have one set up for the P4's yet.

RBob.

 

Here's what i figure the calculation to be in Promgrammer:

8 + Value * .781176


I set hex to 00 and Promgrammer returned MAP value of 8 KPA.
Set Hex to FF and Promgrammer returns 207.2 KPA

This is with the 2 bar MAP bit set (don't know if that makes a diff)