When the tuner says they can reload you data if it is overwritten by the dealer - don't believe them, they can't - so DO NOT have it over written by Mercedes !
I paid £400 for a remap, it ran really well for a few years. It was later updated by an indy who told me it would most likely cure my on going disapearing eco problem.
The update cost £110 + vat - it made no difference to the fault but I later found out it was the dreaded emissions update, continuous regens, worse fuel consumption and no 7th gear until 75mph.
I sent it back to the original tuner who said they could do it no problem - they charged me £150
They said they had never seen the software before..
It turnes out all they did was put another map (not my original off the Dyno) onto the same software that the Indy put on.
I still had the issues as above.
The next day it over heated stuck in a regen for 40 miles and dumped all its oil everywhere - no way to prove it was the update though, maybe just a coincidence ?
£1800 to fix the oil seal, then another £400 from a different Indy to put right the work properly.
They had the ecu back again only to again tell me they have never seen that software before (second time they have seen mine??) and there is nothing they can do with it so just charged me the postage back - Another £20 in total
I am now using a standard ecu with no remap as I had a spare.
Not only have I lost £570 on the remap, maybe also £2200 because of it.....should never had done that original update !
I paid £400 for a remap, it ran really well for a few years. It was later updated by an indy who told me it would most likely cure my on going disapearing eco problem.
The update cost £110 + vat - it made no difference to the fault but I later found out it was the dreaded emissions update, continuous regens, worse fuel consumption and no 7th gear until 75mph.
I sent it back to the original tuner who said they could do it no problem - they charged me £150
They said they had never seen the software before..
It turnes out all they did was put another map (not my original off the Dyno) onto the same software that the Indy put on.
I still had the issues as above.
The next day it over heated stuck in a regen for 40 miles and dumped all its oil everywhere - no way to prove it was the update though, maybe just a coincidence ?
£1800 to fix the oil seal, then another £400 from a different Indy to put right the work properly.
They had the ecu back again only to again tell me they have never seen that software before (second time they have seen mine??) and there is nothing they can do with it so just charged me the postage back - Another £20 in total
I am now using a standard ecu with no remap as I had a spare.
Not only have I lost £570 on the remap, maybe also £2200 because of it.....should never had done that original update !