I had my car remapped about a year ago and it has performed great until this week.
In the last week the car would come on boost really strong then start hesitating around 5K (still accelerating but felt like the car was just revving without much boost). The problem has gotten worse over the last few days with it now seeming to start doing this at 3-3.5K.
The car still does accelerate, but not like a remapped car. It almost feels a bit juddery and un smooth and feels like it's getting worse the more I drive it. Have plugged a friends device into it and it's not showing any fault codes?
Could it be a coil pack on way out, plugs, turbo?