RobbiE250
New Member
Hello All, first time poster here, looking for a little advice regarding issues following a remap.
Sorry for the long first post!!
I recent bought a 2014 E250 CDI AMG (facelift) and have done a couple of basic aesthetic mods, spoiler, wheels and E63 grill.
I then had the car remapped by well known national tuning company. Nothing special, just their standard map which bumps up the torque, BHP and improves economy. I noticed the performace improvements straight out of the box, however, within a day I got an engine check light and limited performance after I tried putting my foot down to overtake someone. I stopped the car and turned the engine off then turned it back on, after which the car drove fine but the check light stayed on. I took it back to the mapper the folowing morning and he checked the fault codes which showed the following:
P008791 - The fuel pressure in the system is too low. The parameter is out of thr permissible range.
The mapper said it could be that the fuel filter needs changing, he cleared the code and told me to keep an eye on it.
Fastforward one week and the exact same problem occurred today. After driving 150 miles without fault and putting my foot down once or twice, I came to an overtaking lane, hit the gas and the car just stuttered a fraction of a second, the check light came on and I got limited performance. Same scenario, stopped the car, turned off, turned back on and all is well but the check light is still on.
I went straight back to the mapper this afternoon and the faults codes were:
P008791 - The fuel pressure in the system is too low. The parameter is out of the permissible range.
P061B85 - The torque calculation of the control module is faulty. A signal is above the permissible limit value.
I have agreed to take the car back to the mapper tomorrow morning so that he can check the air and fuel filters, these will be replaced if need be and he said that he should be able to tweak the map to deal with the faults.
Do any forum members have experience of these codes, especially following a remap?
Should I be thinking about reverting back to standard map?
Thanks in advance.
Sorry for the long first post!!
I recent bought a 2014 E250 CDI AMG (facelift) and have done a couple of basic aesthetic mods, spoiler, wheels and E63 grill.
I then had the car remapped by well known national tuning company. Nothing special, just their standard map which bumps up the torque, BHP and improves economy. I noticed the performace improvements straight out of the box, however, within a day I got an engine check light and limited performance after I tried putting my foot down to overtake someone. I stopped the car and turned the engine off then turned it back on, after which the car drove fine but the check light stayed on. I took it back to the mapper the folowing morning and he checked the fault codes which showed the following:
P008791 - The fuel pressure in the system is too low. The parameter is out of thr permissible range.
The mapper said it could be that the fuel filter needs changing, he cleared the code and told me to keep an eye on it.
Fastforward one week and the exact same problem occurred today. After driving 150 miles without fault and putting my foot down once or twice, I came to an overtaking lane, hit the gas and the car just stuttered a fraction of a second, the check light came on and I got limited performance. Same scenario, stopped the car, turned off, turned back on and all is well but the check light is still on.
I went straight back to the mapper this afternoon and the faults codes were:
P008791 - The fuel pressure in the system is too low. The parameter is out of the permissible range.
P061B85 - The torque calculation of the control module is faulty. A signal is above the permissible limit value.
I have agreed to take the car back to the mapper tomorrow morning so that he can check the air and fuel filters, these will be replaced if need be and he said that he should be able to tweak the map to deal with the faults.
Do any forum members have experience of these codes, especially following a remap?
Should I be thinking about reverting back to standard map?
Thanks in advance.