HI there all , I need your experience guys help . I have got xj 2.5 td(diesel) 1999 limited with 1004 mileage . I love the car but go's sluggish ,not moor than 70pmh . up the hill embarrassing!! intercool cleaned new air sensor fitted , egr cleaned out with inlet manifold fuel filter , took out injector number 1 and is very clean , car really nice and when I say I am going to sale it my 8 years old son cry's very hard and makes me keep a car again !!!! please if any body had same problem could help me out? thank you all jeep lovers