Stuttering/slipping when coasting to acceleration

Ok let's see if I can describe this accurately. First off, just had an EGR, vacuum line(not sure exactly which one), and a MAP sensor replaced (all oem). The bad egr was causing car to idle rough, stutter and want to almost cut off. Mechanic that did the work is a family friend and was supposed to check the car out completely. Now that those have been repaired car is running 100% better with this exception. After a day noticed a slight hesitation, stuttering, slipping(not exactly sure how to describe it) when going from a coast to accelerating. Ie driving along at 60mph let off of gas for traffic etc then resume speed. There is no specific speed this happens at really doesn't matter how fast just the point of being off of the gas pedal to on the gas pedal. At the moment no CEL's and when driven with an engine analyzer no problems shown. Any ideas of what this could be without me having to go through a huge trouble shooting list to find out what the problems is? Already dropped $800 on the above listed repairs so is there any thing I could do on my own without spending a ton of money to figure out what it is?