Hi just wanted to share with you some problem's that i've had with my 2002 a31.8t 150bhp (remapped to 197bhp) over the last 6 month and finally got sorted. it all started when i got the car remapped, these were the problems i was experiencing, An intermittent loss of power Turbo spool would sound really loud some days then other days really quite. The ESP traction control light would come on intermittently when accelerating! Would go into limp mode sometimes There was also intermittent hesitation and juddering Some days the turbo sounded like it was hissing I started sifting through many thread on here and started to believe in many possibilities Dodgy MAF Sensor, bad N75 Valve, dodgy coil pack, Bad spark plugs, bad diverter valve the list goes on and on etc. I got as far as replacing the D.V as it was still on the standard one and changed the spark plugs but was still experiencing the same problems. I did a visual inspection of the boost pipes but couldnât see anything up. All the intercooler pipes and vac lines seemed to be in good shape. Anyway on closer inspection I got underneath the car to inspect the intercooler pipes properly and found that the rubber hose that has the metal coupling, which attaches to the pancake pipe was attached but had loads of play in. When I took the pipe off the rubber washer that goes around the metal coupling that creates the seal was missing!! Anyway I brought a replacement pipe banged that on in 5mins and back to normal!! I just couldnât believe that something as simple as a loose pipe could cause so many problems!! plus i was lossing a lot of power the car feels amazing again!! I guess what Iâm trying to say the moral of the story is before you fork out on expensive replacement parts i.e. Maf Sensors etc, get it on vagcom!! Or check for boost leaks. And dont try and do guess work.