Quote:
Originally Posted by ErvGotti
So basically if BMW really wanted to they can bring up this kind of info on the N54/55 and it'll show them boost pressures a tell tell sign if you had a tune. So no tune on the market is 100% safe.
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This visibility only really applies to flash based tuned. Piggyback tunes, on the other hand, work by effectively shielding the DME from higher-than-stock boost data. In the case of the Procede, the Procede computer feeds the DME a boost signal based upon its CAN DME Boost Target. Once the DME is satisfied, it controls boost all by itself without the DME knowing any better. The advantage is unrestricted boost control and complete diagnostic invisibility.
Shiv