Had to re-read the first post to pick up on his edit, and to the OP, by an induction system cleaning....they're after your money to clean the injectors, throttle body, and MAF sensor. You might want to price that service out at an independent shop.

Or check out our Search function for DIY info on cleaning the throttle body, but be forewarned, the throttle body is delicate and it must be handled very carefully.