I noticed my idle smoothed out a great deal after the BG upper induction cleaning and again after the manual cleaning. The acceleration also "felt" better.
If it's a gradual loss of power/throttle response, you will probably not notice it until the valves and intake are once again clean.
It reminds me of my first set of eye glasses.
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Mods: GM Locking Gas Cap, RS License Plate Frame, SS Brembos, ZL1 FrontEnd, 14/15 Convertible Top
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