I've not long purchased a 2009 E91 325d. The car has the 3ltr diesel engine although in a slightly detuned mode from the more popular 330d - power = 197hp & torque = 400nM versus the 330d power of 231hp & torque figure of 520nM.
I have been told elsewhere that I can:
a) get a chip or map to upgrade to the same level of power & torque as a standard 330d.
b) install an uprated chip or map for a 330d - which uprates power closer to +/-290hp & 580nM
I'm not sure what the difference is between the two engines - I can't imagine BMW build two different types of 3ltr diesel engine (twin turbo version aside!)...
What are your thoughts on the options; are they viable? And, which do you advise? Who is considered the best for maps or chips?
My main reason for change is the requirement of an increase in torque for towing - I don't care about power and would put up with a reduction in mpg... (please don't say - you shoulda bought a 330d or 335d!! The extra £3k for the 330d seemed too much IMHO...)
Thanks in advance........