Thanks for your interest in ARK Design Product. Here is some information regarding the MFD II and your 350Z.

1. Yes the unit will be able to read your factory ECU O2 Signal. The MFD II unit can also read most aftermarket wide band unit that a 0-5V Output Signal. These aftermarket units are what we use to get the most accurate reading while tuning.

2. For reading boost you will have to get the optional boost sensor that will plug right in into the black box of the MFD II.

We apologize we have some programming error on our website, this product should be in the accessories section.

Anyhow, here is the info on the Boost Sensor for the MFD II
PN # 01-0103X-00 Cost $ 89.00

EXAMPLE: CALCULATING BOOST
Many vehicles do not provide an enhanced signal for Turbo Boost but it’s pretty easy to calculate. We’ll assume that boost is the
additional manifold pressure above normal barometric pressure (~14.7psi). For example, MAP=19.7psi minus BARO=14.7psi implies that
the turbocharger is providing BOOST=5psi. This calculation looks like:
BOOST = MAP - BARO
To perform this calculation on the DashDAQ, try setting:
• Input Signal: Manifold Absolute Pressure from GenericOBD2
• Multiplier Signal: Constant Multiplier from Rescale Signal Calculator
• Multiplier Sign: 1 (Positive)
• Constant Multiplier: 1.0
• Offset Signal: Barometric Pressure from GenericOBD2
• Offset Sign: -1 (Subtract)
The calculated value will be available when you assign signals to a gauge (section 0).