ZipTieTECH Posted September 30, 2019 Report Share Posted September 30, 2019 I wanted to ask someone who knows more about barometric pressure sensors for atmospheric tuning. I like to take my car in higher altitudes and although it may not affect too much, i have a lot of open channels and my racepak dash can display barometers so i figure why not just add one. I will be running a map sensor and AIT sensor on my sr20. Any thoughts on routing lines for the sensor. thank you Quote Link to comment Share on other sites More sharing options...
Simon Posted September 30, 2019 Report Share Posted September 30, 2019 The ECU has a dedicated baro sensor on board this is displayed as BAP in the runtimes. ZipTieTECH 1 Quote Link to comment Share on other sites More sharing options...
ZipTieTECH Posted October 28, 2019 Author Report Share Posted October 28, 2019 for some reason i cannot find the BAP. right now i have the on board set as MAP and i set up an external Baro. im not tuning at the moment but building my basemap. I dont know if i have to have the ECU connected to the computer or to the car in order to tune the baro. I figured i would be able to see a table for baro. Still getting use to all of this tuning software actually i found the Runtimes tab. i had to make the new tab. how does baro tune for altitude? does this get tuned by the tuner? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 28, 2019 Report Share Posted October 28, 2019 Typically for a turbo engine you would put MGP on the fuel table axis, (MGP is MAP-BAP) this will take care of altitude changes quite well and rarely needs anything more than that. If you want something more user configurable or want to do something a bit different with BAP compensation then just turn on a 4D fuel table, and put BAP on one axis. The 4D tables are an overlay so act like a multiplier. If you have a "5%" in a 4D table it will add 5% to the calculated fuel, if you put "-5%", it will remove 5% from the calculated fuel. ZipTieTECH 1 Quote Link to comment Share on other sites More sharing options...
ZipTieTECH Posted November 10, 2019 Author Report Share Posted November 10, 2019 Oh awesome I’ll put mgp on the table. Thank you! Quote Link to comment Share on other sites More sharing options...
ZipTieTECH Posted January 19, 2020 Author Report Share Posted January 19, 2020 Hey guys I’m almost ready to lay out my harness and start calibrating sensors. I have a question about the MAP/Baro sensor I bought. It’s a GM 1 Bar sensor that I want to use as my BAP/Baro sensor on my ecu. Is a 1 bar good enough to use as my Baro? Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 19, 2020 Report Share Posted January 19, 2020 As Simon wrote above, the ecu already has a baro sensor built in, you do not need to add your own. Quote Link to comment Share on other sites More sharing options...
ZipTieTECH Posted January 20, 2020 Author Report Share Posted January 20, 2020 Reason why I’m adding my own is because I want to use the on board Map sensor as my boost map sensor. And then have the GM external sensor as my Baro sensor Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 20, 2020 Report Share Posted January 20, 2020 I’m not sure how to make it any clearer, the ecu has an onboard baro sensor, you do not need to wire your own. This is separate/in addition to the onboard MAP. Quote Link to comment Share on other sites More sharing options...
ZipTieTECH Posted January 20, 2020 Author Report Share Posted January 20, 2020 Ohh m sorry I apologize I didn’t understand at first but I get what you’re saying now. Sorry for the confusion Quote Link to comment Share on other sites More sharing options...
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