I have the same problem with my 70mm TB. If you give the car a tiny bit of gas, and I mean tiny, does the idel calm? If yes, you can just drill a small whole in the TB blade. Start with the smallest bit and work your way up. You will have a higher idel, but should level it off. I have not done this to mine because I may be selling it. Maybe someone here has done it....
Good luck, Eric
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1995 GT Black sleeper
Edelbrock 6037 heads,Edelbrock proformer intake,Edelbrock cam, 70mm TB,75mm pro-m mass air,Taylor wires, Underdrive pulleys,Equal length headers,K&N filter
Flowmaster cat-back, Eibach pro rate springs
lower control arms
3.73 gear Centerforce clutch
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