there was an article about this in DSport magazine. They added a GM 5bar and they had the new calculations, i'll see if i can find the issue.

 

Thanks, I would be interested in that article as well.

 

Can't find the magazine, I left it in Iraq. This is what i found in the Datalogit forums.

Simply use a vacuum pump and calibrated pressure supply to offer values whilst measuring the voltage output, then you can enter your own KNOWN ACCURATE values rather than someone elses estimates.i found in the Datalogit forums.

 

ok cool, i'll try and borrow a vacuum pump. but if anyone has any values they can share in the meantime it would help a lot.

 

A 5bar MAP sensor is beyond the range of the Power FC. The standard MAP sensor is not a 3.5bar unit. It is a 2.8bar unit. The Power FC can read up to a 4bar MAP sensor.



How much boost pressure are you planning to run?



We run the AEM 3.5 bar sensor. This sensor will read up to about 38psi of boost pressure before hitting 5 volts. A’PEX Integration is now offering a 4bar MAP sensor too, I used to have the exact settings for this sensor but I can’t find them right now.



Here are some scale and offset settings for various MAP sensors with the Power FC.



APEX Standard 43860 Scale 3289 Offset

GM 3-bar 46574 Scale 5592 Offset

AEM 3.5 bar 60300 Scale 7600 Offset



Remember there is no advantage to running a MAP sensor with more range than you need. If fact, this is undesirable as you reduce the resolution spreading out the pressure range over a smaller range of voltages.

This is from the forums

 

im planning on using the 3.5

can anyone w/the d jetro take a screen shot of the page w/this, i think its settings tab 3, i have been waiting and waiting on datalogit to get back to me w/the registration email to send me the new software, i dont think i have anything up to date.

 

To bring an old thread back from the dead, what happens if I run a 2 bar MAP sensor with the PowerFC? Some people are saying that the 2bar MAP sensor will not allow me to boost past 1 bar, while others are saying that it will support up to 2 bars of boost.

Which is correct?

 

The highest you can go on a Power FC is 4 Bar, GM does not make a 4 bar but the guys at www.RX7.com make one for the Power FC and it comes with the calibration numbers. We use it on our 600 and 650 hp EVO 8s and there good to 43 psi.

 

Why would you run a 2 bar sensor? When I have exceeded the limits of the 3 bar sensor (about 1.9 bar/ 28 psi), the car misses and breaks up. You'd have the same problem at 1 bar/ 14.7 psi.

 

I'm not planning to run a 2 bar MAP sensor. A friend of mine is selling his setup and it comes with a 2 bar MAP sensor and I was wondering if that was going to be sufficient or if I would need to get a 3 bar MAP sensor to replace it.

 

We actually have a 4 bar map sensor with the right tendency and offset numbers for the Power FC.

I was told my Apexi Japan that the AEM 5 bar map sensor will not work correctly, we actually sent a sensor to Japan so they could make it work and set it up for us.....

 

How much for your sensor? There are 2 or 3 of us around here that need them.

 

I don't know honestly. I will have to take a look tomorrow. I have about 4 of them and I think after that they are discontinued parts. Shoot me a PM tomorrow.

 

hi guys, i have got a PowerFc for sale. It comes complete with the FC commander, 3bar map sensor & a harness to fit the Evo8.

Anyone interested do pm me.

Rgds
Victor

 

I couldn't find the sensors on the RX7 site, does anybody know where i can get a 3.5 bar map sensor from and the calibrations for the Power FC.