How can you tell if your car has been mapped?
I just picked up my first C63 (2013) and it shifts, I mean really shifts, I have driven a few in the past and they were not as quick as this I am sure.
There are no visible signs that it has been "played with" secondary cats are still there, no pops and bangs on down shifts, although it does sound epic when going through a tunnel.
I am tempted to re-map it in a few months once the warranty runs out, but i suspect it may have already been remapped? is there any way of checking shy of plugging into the ODB port and to be honest I have no idea what I would be looking for anyway?
cheers
I cant realistically test the 155mph limiter these days on UK roads, too many speed cameras and police around and now it is the summer, random wildlife running in front of you. I nearly hit a deer the other night
Mine very occasionally pops on downshifts and does the blip on upshifts when in S+ I know after doing some reading that a remap typically makes more pops and bangs than standard and removing the secondary cats really adds to this. I am not sure the wife will appreciate it though, the odd time she will be driving the C63.
I have 6 months warranty left, when its run out I may well go for a remap with or without the secondary cats cut out.
Then read the Emissions Readiness status.
If you've got a remap, the chances are that the O2 sensor readiness will be "not ready" or "unavailable".








