Negative MAP values result in a 65.000ms PW.

Reverant · Post by **Reverant** » Tue Jun 27, 2017 3:32 am

I was playing with MAP sensor values in the Calibrate MAP window, and by accident I entered a "value at 0V" that resulted in a "actual" MAP reading of -5kPa. This created a PW of 65.000ms and quickly flooded the engine.

- Please check why a MAP reading of -5kPa resulted in a PW of 65.000ms (maybe the -5kPa got interpreted internally to MAX_KPA-5 and by having multiply MAP enabled created a huge PW?).
- In the ADC calculation method, don't allow a negative MAP reading.

Tested with FW 1.4.0.

Post by **jsmcortina** » Tue Jun 27, 2017 3:45 am

Reverant · Post by **Reverant** » Tue Jun 27, 2017 3:53 am

Attached although not really needed. Just enabling multiply MAP with SD as the fueling algorithm does it. Disabling multiply MAP results in a normal PW.

Post by **jsmcortina** » Tue Jun 27, 2017 11:23 am

Reverant wrote:Attached although not really needed.

No, it was needed. How else can I test with your exact settings?

James

Reverant · Post by **Reverant** » Tue Jun 27, 2017 11:36 am

Were you able to confirm this issue?

Post by **jsmcortina** » Tue Jun 27, 2017 12:04 pm

Reverant wrote:Were you able to confirm this issue?

Yes. Fixed for next pre-1.5.1 beta.

James

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Negative MAP values result in a 65.000ms PW.

Negative MAP values result in a 65.000ms PW.

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Re: Negative MAP values result in a 65.000ms PW.