tt injectors or not, with those off the shelf tunes they make for vw’s they r based on the injector size. if u got a tune for 440cc injectors and u stick in the stock ones the car runs like crap. if like laduke is saying u guys saw the car ideling fine, i don’t see how the wrong size injectors where in their. i know for a fact they r not the stock ones because laduke has the stock ones he took out at his house. it doesnt add up to swap out stock for stock???