Okay so I am finishing up my 383 to swap into my 1997 M3 and I had a few questions about gauges and what can be read from the pcm and what I need to run additional senders for.

1) I want to have readouts for Coolant temp, oil pressure, oil temp, and AFR. Can the pcm read any of these through a obdII ultragauge or do I need to run senders to each individual gauge.

2) can I run a ultragauge and hp tuners with an obd splitter

3) what is the best wideband to tap into hp tuners for datalogging while still having a readout on a gauge

4) do you guys prefer individual gauges or a all in one monitor type.