Hi my car seems to be not pulling properly it seems to hold back its boosting fine and holds 0.8 to 0.9 bar with no needle wobble but the car seems to stutter and its starting to get on my nerves help needed please, i have also cleaned the boost control solinoid

 

plugs, coils and leads. check em. My car needed new plugs and felt soooo much quicker once they were changed.