Hi guys, i have a few queries regarding my cdti that have been bugging me recently. firstly i keep getting the spanner light on the dash, the car runs normally but still has the error, i changed the glow plugs and it went out for a bit but is back again, if i warm the car a bit and restart, it goes away for a while. I have also part blanked the egr valve but the error was there before this. It does go out for a minute but then goes back on again. Secondly, the car seemed a little sluggish at first but i took it for a good hard drive and after this its been performing really well but the fuel consumption is a little high and i get the turbo spool whistle at lower revs when i didnt before! i do have a tuning box fitted but again, was fitted before the issue.