how to monitor boost?

[turboolds]

i have an 01 supercharged zo6, and i want to monitor boost w/ efi, how do i go about doing this, do i need another map?, need all the info i can get thanks alot

[TAQuickness]

Welcome to the forum Turboolds.

You should be able to log manifold pressure to monitor boost - but it won't work so well if you still have a 1bar MAP sensor installed. Can you tell us a little more about your setup?

[turboolds]

i still have stock map, the car is supercharged, novi setup, intercooled, how do i convert manifold pressure to boost?

[TAQuickness]

MAP - BARO is the simplest way. However, since you're running the stock MAP sensor, it tends to run out at 105 kPa (~5 kPa over sea level). You would need to upgrade to a 2 or 3 bar MAP sensor to utilize this method.

[Highlander]

well... i have used the 2 bar map sensor.. how do we go about this??? I can log over 105 KPA, but is there a calculated PID that does the conversion to PSIG?

Thanks

[rally1]

I would assume you would have make a calculated PID with PSIG = KPA/ 6.895

[5.7ute]

well... i have used the 2 bar map sensor.. how do we go about this??? I can log over 105 KPA, but is there a calculated PID that does the conversion to PSIG?

Thanks

I have posted a calc pid file on this forum which will do what you want. Here is the thread. http://forum.efilive.com/showthread.php?t=9598

[Highlander]

well.. what i did was... {sae.map.psi}-14.7

what i really wanted was something correctly referenced... Like if there was a pid to ask the PCM for the map at key on. That way you can substract THAT. and not the 101.3 or 14.7 in this case. Because if I install an incorrect map sensor and the scaling is incorrect... i have no way of knowing either.

This comes after logging a E38 which i get 7psi boost calculated, but I am getting 10psi on the gauge....

[JezzaB]

well.. what i did was... {sae.map.psi}-14.7

what i really wanted was something correctly referenced... Like if there was a pid to ask the PCM for the map at key on. That way you can substract THAT. and not the 101.3 or 14.7 in this case. Because if I install an incorrect map sensor and the scaling is incorrect... i have no way of knowing either.

This comes after logging a E38 which i get 7psi boost calculated, but I am getting 10psi on the gauge....

This how I did it many moons ago:



*CLC-00-000
psi 0.0 10.0 .0 "({SAE.MAP}-{GM.BARO})*0.145"

CALC.BOOST F600 CLC-00-000 "psi" Air "Boost pressure"


You have to log GM.BARO for it to work.

Jez

[5.7ute]

This how I did it many moons ago:



*CLC-00-000
psi 0.0 10.0 .0 "({SAE.MAP}-{GM.BARO})*0.145"

CALC.BOOST F600 CLC-00-000 "psi" Air "Boost pressure"


You have to log GM.BARO for it to work.

Jez

I was looking at something like that, but for some reason I had it in my head that GM.BARO was not a valid pid for the earlier PCM's. I will have to give it a go after work.

[joecar]

({SAE.MAP.kPa} - {GM.BARO.kPa}) * 0.145

or

{SAE.MAP.psi} - {GM.BARO.psi}

[Highlander]

as said earlier.. gm.baro is not a valid pid.. but thanks guys.

Any way to log map voltage?

Thanks

[joecar]

There's also GM.BARO2 and SAE.BARO.