Hi all
I asked the same question to DPChip yesterday and here is their replay when playing around with the setting.

Hi Sam,

thanks for the positive feedback. The DPChip is changing both fuel and timing, in essence it is optimising the fuel system and the power and torque increases are a byproduct of an efficiently running fuel system. Fuels savings can also be achived by this depemnding on driving style. Many other chips only change fuel and in a diesel, yes you can just add more fuel and you will get more power however you are not being efficient this ay. We aim to have the vehicle running to optimum and power and torque will follow this.

Changing the settings moves the whole programming up or down 1 or 2% each notch. 0 is off. perhaps instead of 1 - 9 it might be better to think of it as -4 -3 -2 -1 0 +1 +2 +3 +4 with 0 being our setting of 5 in the middle +4 = 9. You can see we have some room to move and this is usefull as each vehicle is different. Feel free to adjust it up, depending on your vehicle you will get various results. Some (same vehicle type same build date) may easily cope with setting of 9 while others may only get to 6 or 7 before they get black smoke. Each vehicle is different. If you go to far you will either get smoke or a warning light or at worst the vehicle goes into limp home mode. This is a sign to turn it back. Your vehicles operational safety systems remain intact that is what makes our system so safe. There is only a few percent difference between 5 and 9 so feel free to experiment with those settings. I find on my Nissan the best for my vehicle for power and economy is actually 3. Try a few tanks of fuel on each setting and take notes to see whats best for your vehicle.

530d is the same chip..DP-31. Our figures show both have 480kw before to 525kw after so Im assuming the same engine but would have to ask our technician. Yes, the chip could be swapped between the two vehicles.

I hope these answers have helped.

If you have any further enquiries please don't hesitate to contact us.

regards,

DPChip - The Diesel Power Chip
More Power - More Torque - Better Economy
http://www.dpchip.com
Phone: 02 48771022Fax: 02 48771239

Hope this info is useful to some

Hey AUSSIE-X5
It could be that we have the same driving patterns thus explaining why our consumption is higher than most drivers. Does ur service indicator tells u to bring ur X5 in for service earlier than it is suppose to ? My service indicator always tells me to take it in around about 15000k/s where it suppose to be around 20000ks according to sales rep. Service tech told me that indicator changes according to driving style therefore he said that I must push the engine quite hard hence the indicator recognizes that an earlier oil change is required . Verg smart service indicator i might add.

I have tried setting 7 today. I feel that the engine is more powerful at higher rev compared to 5 but not much is happening at lower revs. Is that the same for u AUSSIE-X5? I will try setting 3 in the next few days to see if it saves more fuel.

cheers guys