Are throttle body spacers worth installing, I haven't noticed much change since I installed mine
My car has 164000 miles.
My car has an automatic transmission.
I have used one of these type throttle body spacers on my truck and do not notice any change in the way my vehicle runs. It is supposed to increase power and acceleration. The theory is to increase the amount of air the engine brings in to the engine. I would not recommend installing one.
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