My Export 2002 2.5L CRD does not have the power output of the 2.8L variable vane turbo models obviously.
Years ago on the recommendation of one 2.5 CRD owner I purchased an Italian made "Performance" adaptor that connected in series with the MAP sensor and the harness to try and get some better performance.
This was obviously a simple resistor meant to change the resistance of the MAP sensor so as to fool the ECM into supplying more fuel.
Power improvement was very good but fuel consumption took a steep dive obviously so I was in two minds as to keep it fitted or to remove it.
My decision was made for me when on a long trip I heard a loud "bang" up front and the Jeep ground to a halt.
I removed this adaptor at the roadside and drove back home with the original MAP sensor doing all the work....power down and better fuel consumption once again.
I think I am due for a new MAP sensor now years later...the early Export CRDs use a different Bosch MAP sensor to the later 2.8 L models....my sensor has two small Allen screws holding it in place as apposed to the newer one-screw models. The Dealer price for a replacement is exhorbitant so I intend contacting the local Bosch Dealership to try obtain one with the same Bosch number as the original!