My tbird and capri have adjustment screws on the throttle body. Depends on how old or new your fuel injection system is. Thats just for base idle though. You have to usually ground a certain wire to set it. After that computer and IAC take over.
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'05 Outback XT, 19 mpg
BP-turbo 93 Festiva (long gone)
1/4 mile - 12.50@111.5
Best MPG - 36.8
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