Good day folks.
I've got a mk4 xr3i, but i've noticed that it's getting slower and slower,, it does get regular servicing though. I've had quite a few xr's and my mk3 was much faster,, Could it have something to do that there's a cat under this one...? Should i get rid of the cat?? Anyone help??? Also when it's warm it seems to stutter at low revs.... can anybody help me?