NefMoto

There is a map sensor on the top of the original intercooler on my audi tt (non quattro).  I plan on replacing the intercooler.  Is there anywhere specific the sensor needs to be placed? I'm guessing  it should be closer to the output of the intercooler ?  Anyone know where it's placed on the quattro, because looking at videos on replacing the intercooler they never mention the sensor. 

output side of the intercooler

generally right before the throttle body

BTW "MAP" is a misnomer.

My replacement intercooler is like most is going to sit in front of the radiator, so the output of the intercooler sits far away from the manifold kinda more so pointing toward the trans area or drivers side headlight(us).  Being that it’s a non Quattro the manifold or the inlet of the manifold points toward passenger headlight (us). The plan is to utilize the black chassis pipe from the output of the intercooler to run back to the manifold inlet.  I believe it’s the same pipe that interconnects the two intercoolers on the Quattro version.  So is it better to have the sensor closer to the inlet or the outlet?   If I type map sensor Audi TT into google it shows up.  I also type boost sensor Audi TT it shows up,  I am unsure why it’s a misnomer.  I believe you, but yeah I’m not that well versed.

It should be near the thottle body.



The M in MAP stands for manifold.

The pressure sensor is not in the manifold. In fact, actual manifold pressure is modeled based on the upstream pressure sensor before the throttle body by calculating pressure drop over the throttle body.

I highly recommend understanding where everything goes and why before starting any tuning.

So I'm thinking that you would need a pressure sensor after the throttle body to do that. And that there's a distance and radius or area factors involved.  But I don't remember seeing a pressure sensor after the throttle body?  Only the air intake sensor.  Can you explain?

It makes no difference where it is as long as it is between the intercooler outlet and the throttle body.

I trust prj on this, though I was told otherwise by other people.

There is no pressure sensor after the throttle body. That would be a MAP, which you don't have, and the ECU doesn't expect to see, because it models manifold pressure based on the pre-throttle body pressure sensor and a modeled pressure drop over the throttle body.

Which is why i said 'MAP' is a misnomer.

You seem to have completely and totally misread my post :(

Ohh I see.  Wasn't completely misread.  Maybe 80 percent k maybe 85.  It was morning here and there was a line for coffee.  I get it.  Thank you so much!