I need some urgent advise

Just an hour ago I had a warninglight "Tyre-presure"...so I was in the direct neighbourhoud of a VW garage and brought it in.
Tyres were checked malfunctions where read out and everything allright so they reset the warninglight (I guess via the glove-compartment)..
Now here it comes I drove towards home and would swear before a judge that I have powerloss...

I went in immediately and asked if they noticed I have had an ABT remap....their answer was we did not touch the motormanagement and by the way since your ABT is official it is registrated with all the VW garages....so not possible
Can somebody who is familiar with this....ease me down and tell me it is just my imagination playing havocs.....
