Thread: MAF->MAP conversion with Tunercode?

It is still being worked on right now. When we know more we will most certainly fill you guys in!

Subscribed.. I'm considering this on my KA-T build. Running SR ECU to convert to COP and now MAP.

Help me get rid of my MAF...so just to clear things out, the plan is to have the EGR temp sensor circut running the AIT sensor, and the MAF sensor circut running the MAP sensor?

Pretty much, however the new realtime daughter board has 4 analog inputs, so one of those could be used for the IAT sensor.

Dave

I would encourage you to look at a different MAP sensor. The GM one is reported to be a bit flaky at times. Yes, it is half the cost of the AEM or equivalent. But do you really want to go cheap on the one sensor that is going to control the vast majority of your tune?

I really think the GM sensor just gets a bad name because there are a multiple different types of the GM 3 bar sensors, and to my knowledge they all use different scalars/offsets, so if you used the wrong one it would definitely not read correctly.

The AEM sensor is definitely a nice choice though as it gives you a bunch of different options for installing it.

When I was shopping MAP sensors, I found no evidence of problems with the GM 3bar. Actually, it was the one most recommended. I have seen reports of problems with the cheap knock-offs, but none with the GM/Delphi part.

In any event, TunerCode will be able to handle any 0-5V map sensor.

Dave

Hey Dave, I have a Zeitronix 5-bar map sensor, is this gonna be able to used easily? It appears that it uses a 5v source, so I assume the only wire it would need to share to the ECu would be the signal back?
http://www.zeitronix.com/installation/mapinstallation.shtml

I've been using the TPS 5V power from the ECU to supply the GM 3bar 5V with no problems so far. The GM requires only 20mA max. Depending on the 5V power requirements of your MAP sensor, and any other devices you have requiring a 5V supply, you may want to use a separate supply, for example:
7805 5V Power Module/ Regulator

A 7805 5V power supply ($1.59 at RadioShack) by itself without a heat sink is good for about 380mA.

The 0-5V analog output from the MAP sensor will connect to the MAF sensor input, or to one of the 4 extra analog inputs on the new RT daughter board.

Thanks,
Dave

Shameless plug: Not sure what your build consists of but I have an AEM 2 bar sensor for sale if you wanted to try it over the Zeitronix. Or anyone else reading this thread that is interested in going with a MAP sensor over a MAF.



http://www.sr20-forum.com/forced-induction/44185-tn-cheap-aem-2-bar-map-sensor-85-shipped.html