Hey guys! So ive decided to map my auto 2005 525d, it just doesnt have enough pep in its step for me! So i called mapper this eve, and he said im better off removing dpf before mapping it, now theres no dpf faults in ecu, so i wasnt going to, but he said itll make a good difference and help with mpg, so will i gut it yes? No? Any opinion appreciated! Also is the dpf the box right after turbo? With the two sensors? Or is it the one further back the exhaust, im confused as to which is dpf and which is cat.

Now next question is im changing the glowplug relay at the weekend, and i have a set of inlet manifold blanks here for swirl flaps, should i fit them? I dont want to loose too much low down torque, but again guy mapping it said blank them first and can adjust the loss in torque with map, any opinions appreciated!!