Here are my thoughts,
When you switch to recirculate the A/C compressor comes on. The G6 compinsates for the drag by picking up the RPMs.
Once you hit the switch the RPMs go up, sometimes just a tad before the A/C compressor comes on resulting in a slight burst in power.
When you switch to recirculate the A/C compressor comes on. The G6 compinsates for the drag by picking up the RPMs.
Once you hit the switch the RPMs go up, sometimes just a tad before the A/C compressor comes on resulting in a slight burst in power.