Originally Posted by Methodical4u

hmmmm.... I haven't been around my car while it was warmed up and idling to see if it does this, so i'm not sure about it.... i'm to cheap with gas lol. It's always possible though. How many miles are on the set-up since everything was installed?

There is also the chance the mechanic damaged the MAF sensor when doing the install. Not like most people are going to be honest and pay 200 or however much those things are to replace it.