How many of you use an Air Shifter or Electric shifter using a RPM activated switch?

My PPP shifter has air capability and I use an ACD shift timer with it..... except I started running the Heritage Series races out here in the west which made it necessary to remove both items from the car.... but in D7 pro class it's legal. I also like it running a heads up challenge race that I get involved with from time to time at a 1/8 mile track.

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