4.0t No Maf Sensor
#1
AudiWorld Super User
Thread Starter
4.0t No Maf Sensor
I changed my air filter and was surprised there is no maf sensor. I thought maybe it was hidden somewhere in the charge air cooler area so I read through the self study and there isn't one.
#2
AudiWorld Super User
Yep, they seem to go away with blown motor designs. Though I though my Mini turbo still had one in their design.
#3
AudiWorld Super User
Thread Starter
My 2.7t has one as well as my 1.8t. Cummins 6.7 also had one. It would be interesting to hear from the engineers why they did away with it on the 4.0t.
Also the K&N fans can have at it. Although I doubt they will see any gains. That air filter is pretty impressive. If someone wanted to flow more air they could simply install the S8's second air box and plumbing.
Also the K&N fans can have at it. Although I doubt they will see any gains. That air filter is pretty impressive. If someone wanted to flow more air they could simply install the S8's second air box and plumbing.
#4
AudiWorld Super User
My 2.7t has one as well as my 1.8t. Cummins 6.7 also had one. It would be interesting to hear from the engineers why they did away with it on the 4.0t.
Also the K&N fans can have at it. Although I doubt they will see any gains. That air filter is pretty impressive. If someone wanted to flow more air they could simply install the S8's second air box and plumbing.
Also the K&N fans can have at it. Although I doubt they will see any gains. That air filter is pretty impressive. If someone wanted to flow more air they could simply install the S8's second air box and plumbing.
Last edited by MP4.2+6.0; 09-27-2016 at 09:23 AM.
#5
AudiWorld Super User
Thread Starter
Makes sense that they can calculate flow using the other sensors. I also suspect it relies heavily on knock and O2 sensors. That is why higher octane fuel bumps HP so much. Not sure if you have looked at the filters in your D4 yet but they are a 2 stage design. Also it's a joy to remove and replace. The D3 air box was a nightmare.
On another note I did notice that the rubber seal around the engine compartment is cooked and brittle at the back above the turbos. I'll have to have that fixed next time i'm at the dealer.
On another note I did notice that the rubber seal around the engine compartment is cooked and brittle at the back above the turbos. I'll have to have that fixed next time i'm at the dealer.
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