99mx5 EFR build
#581
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Join Date: Oct 2006
Location: Las Cruces, NM
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Thanks for that Reverant! I wasn't too sure about the values and they certainly didn't match my boost gauge.
This makes the run 375WHP / 319WTQ @ 19 PSI of max boost.
I found this link:
MAP kPa to Boost PSI Equivalents
which led me to this calculator:
Units converter for pressure
Here are the correctly converted values. I remember seeing my boost gauge just past 20. The gauge shows 25 max.
RPM - kPa - psig
2000 - 50.1 - -7.43 (in vacuum)
3000 - 110.5 - 1.33
4000 - 165 - 9.24
5000 - 221.5 - 17.43
6000 - 233.6 - 19.18
7000 - 220 - 17.21
The EFR plots again (Sorry for the confusion and thanks for the clarification Dimitris)...
6258
![](https://www.miataturbo.net/attachments/build-threads-57/133339d1424071894-99mx5-efr-build-6258.jpg)
6758
![](https://www.miataturbo.net/attachments/build-threads-57/133340d1424071894-99mx5-efr-build-6758.jpg)
Video of pull
This makes the run 375WHP / 319WTQ @ 19 PSI of max boost.
I found this link:
MAP kPa to Boost PSI Equivalents
which led me to this calculator:
Units converter for pressure
Here are the correctly converted values. I remember seeing my boost gauge just past 20. The gauge shows 25 max.
RPM - kPa - psig
2000 - 50.1 - -7.43 (in vacuum)
3000 - 110.5 - 1.33
4000 - 165 - 9.24
5000 - 221.5 - 17.43
6000 - 233.6 - 19.18
7000 - 220 - 17.21
The EFR plots again (Sorry for the confusion and thanks for the clarification Dimitris)...
6258
![](https://www.miataturbo.net/attachments/build-threads-57/133339d1424071894-99mx5-efr-build-6258.jpg)
6758
![](https://www.miataturbo.net/attachments/build-threads-57/133340d1424071894-99mx5-efr-build-6758.jpg)
Video of pull