Quote:
Originally Posted by //TMT
Wait - you're reading the value from the car, or do you have a boost gauge?
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!
How does the car actually feel? Does your butt dyno tell you it's different? Can you try any 1/4 mile testing?
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I was about to comment the same in regards to boost measurement via the OBD II and how that would be an altered reading.
Only way to get a true measurement would be the more analog route of a boost tap.
Quote:
Originally Posted by xcelir8bmw
Reduced Power for sure. Butt dyno slow. Wrong maps. Various tools I use and even BMW dashboard on power and torque suck. Feels like a civic.
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Have you noticed or measured any other changes to the behavior of the engine or car? e.g. performance gain/loss, rough idle, hesitation, etc. Are the issues/symptoms the same as with your Dinan unit?
Any other mods on the car? mechanical or electrical?