Put the car back to standard, or at least put stock chip in, if there no fucking way it can do 143 in any distance then surely there would be a good chance of getting away with it with a goof lawyer who would use that stuff as damning evidence.

Evidence that should just get it thrown out, as if it read wrong it could be any speed, under or over the limit.

And TBH, even at your spec, a TRUE 143 is pretty good going, innit?