so CEL came on a few weeks ago as it does here and there so got it scanned today and it said "cooling system to lean" anyone ever hear of this could it just be the mods throwing the light. car is tuned so i thought cel wasn't suppose to come on and no mods to the cooling system beside cold air intake thanks guys..
2006 Passat FSI 2.0T | Forge DV Spacer | 17" Monte Carlo Wheels | 10" Kicker sub in custom box | iPad Mini Dash installed as headunit | 5% Tint on sides, 30% on back window | Carbon fiber mirrors | Votex Roof Rack | Resonator Delete w/ Magnaflow tips | Badgeless grill | OEM Audi S6 LED DRLs | Lip spoiler
My guess is it said System too lean and it is a P0171 code. Could well be caused by your CAI since they sometimes don't get the part for the MAF sensor right, which leads to wrong readings.
Owning a VW is like having a hot girlfriend that's mentally unstable