Quote:
Originally Posted by //TMT
Wait - you're reading the value from the car...
If you're reading the value from the car, you are reading the *shifted* boost value that the TDI box has remapped. This type of box intercepts the actual value and changes it, to lie to the engine controller to fool it into producing more boost, etc. So, the engine controller's is (by definition) not accurate!
|
TDI does say something similar. However, out of curiousity, testing tonight.
Why wouldn't the OBDII boost specs show 22.8 MAX, while the TDI unit pushes more above it?
Why would 22.8 show reduced if the OBDII is 20.xx, would the TDI be adding 5 PSI as an example.
I found this:
http://www.p3cars.com/bmw/p3-boost-tap-bmw-b48-b58/
But I think it is the wrong MAF sensor shape for the M35i (looking later).
Cause honestly, besides a DRAGY or tapped boost gauge, I want 'real' measurements.