Dealership Can't fix my problem :-(

[diabolical1]

Originally Posted by WE3RX7

It sounds like the first step would be a reset of the ECU. The light flywheel and exhaust changes will affect the fuel mixtures at idle or when coming in/out of gear. Disconnect the battery and let it reset completely, then reconnect and drive around some going through the gears.

+1

this is my thought as well.

on a totally separate note, i'm impressed that you found a Mazda dealer willing to do all that they did to your car.