You disable IAT compensation while running SD by setting the SDTempWeightingtable in direct access to all zero. This removes IAT compensation while retaining basic coolant-based compensation.

If you choose not to run an IAT sensor, then you only need a MAP sensor to run SD. We have two MAP sensors available on our website:

GM-style- Provides a general-purpose port-style nipple interface you can run a simple vacuum line to.

Mitsubishi-style- Mounts in place of a factory 2G MDP sensor on a factory 2G-style intake manifold.

Both are the same 4-bar sensor internally, so there's no decision there.