I got a CEL light and when vagcom'd the code is 17536 fuel trim: bank 1 system too lean. whats goin on is it a vacum leak or do i need to replace mah mass air flow!? any suggestions....

If you have just replaced the MAF then you have a good mind set that the MAF is not the prob. Look at what you have replaced or have even touched. Mos of the time when that code comes up it is a vacume hose off or a bad recurc valve...... But A Rule Of Thumb For All is that if you have just replaced a part or made a mod, now you MIL light is on, or the car is doing somthing odd. Back track. Check what you have done, and if all looks good. Put the car back to the way it was befor, and check if all is good. =)