Hi all! found this thread, thought I`d say my bit.
I`m an aircraft engineer and we use dielectric silicon grease on connectors in areas prone to moisture, like cockpit and cabin floors. It is usually applied to the outside of connectors to prevent water ingress, and to provide further insulation.
The theory of its use here inside the MAF plug is sound, as it should minimise electrical leakage between connector pins, providing a `cleaner` signal (as long as the pins are still touching!). This should
help the ECU collect more accurate readings and provide more accurate fuelling.
I tried it a while ago but could`nt get my MAF plug off! So after finding this thread I will give it another go!