#7876, "RE: Atmosphere venting, what does it do?" In response to In response to 8
Originally posted by Hult250R
Originally posted by BigBald Install the buy a 3Bar Map Sensor, buy a GM MAFT setup and then install Tial.
Where does the 3 Bar Map sensor come into play?
When you install a GM Maf w/ Translator on any car, it is supposed to emmulate the stock mas. The problem with it is it usually doesn't. On average it can read as much at 14% higher then the stock mas. This will cause you to run crazy rich, meaning that your airflow reading will be extremely high. Now some people can live with that. If you have DSMlink, you do not have to live with that. You can install a map sensor and adjust the airflow reading to be as accurate as possible. Here is an example on Jimmy's car of what i did.
You can see in the Before Picture how far the aifflow reading was off by comparing BoostEst and GM3Bar. The ECU was seeing 10psi higher then we were actually boosting:
Here is the graph after i made my airflow adjustments. The ECU was now reading Airflow alot more accurately then before. This is what the MAp sensore enables you to do via DSMLink. Because of this, everything in the ECU will be alot more accurately.:
I also love the idea of being able to log boost and analyzing the data based on the info provided. And the Boost Gauge and Map Sensor were pretty much the same give or take 1psi. Add a Wideband to the mix and you can tune pretty accurately...Which he also had.
_____________________________________________ Jerrome B. 1995 GSX - Race 1997 GST - Drive 1995 GST - Who the hell knows
