I'm working on tuning the idle control on my engine, which is an AMG 3.6L M104 engine, using an 80mm Hemi dbw throttle body. The idle is very stable now, but does dip when turning the steering wheel. This doesn't seem to be a huge issue, but I'm wondering how effective a power steering pressure switch is in regards to stabilizing idle speed. Fan step and a/c step are able to make a throttle position correction before either are engaged, as opposed to the power steering step which is reacting to the switch changing state. Is it worth adding a power steering switch to provide even better idle stability? How well do they actually perform in operation?