I have made a Plug and Play adapter harness for Porsche 944 Turbo. Although all connections etc are present on the two original ECU plugs (it has Motronic 1.0 "DME" controlling fuel and spark and "KLR" monitoring knock and controlling boost solenoid), the intake air temperature sensor is in the "barn-door" AFM, meaning it is
before turbo and intercooler.
While it apparently works when air mass is directly measured by AFM, would it cause issues with VEMS and speed density? I would think that it would or...?
I would really like the option of keeping the under-hood 100% stock as many customers would buy this product just as a replacement of original ECU's since the failure of either of these two is not uncommon and they would like to keep the car otherwise stock.
I would just try to tune the car with MAT sensor in stock location and then make another tune where I have relocated the sensor post-intercooler.
Any thoughts?
Here's the adapter (still needs some wrapping etc, to be done after car is fully tuned):