[zenmaster]

In Shiv's review of the Turbo Tuner, the implication seems to be that there is only an indirect means to know about knocking via the ignition advance logging:

"...I also logged ignition advance with and without the Turbo Tuner. As expected timing was 2-3 degrees lower, under full boost, with the Turbo Tuner. I can only conclude that the timing reduction was induced by the factory ECU's knock control/adapative capabilities. Not by any signal manipulation from the Turbo Tuner itself..."

Is it possible to log the signal from the knock sensor? We used a J&S monitor for the RX-7, but is something similar available for the 335i?