I get about 10% better fuel economy with my remap. The problem with EGR valves is not just one of economy though....once they soot up, you'll notice surging on the throttle...it's very annoying, and it's caused by the EGR valve sticking in positions rather than freely moving between closed and open as it should.
A flash remap, for the chap who asked me to elaborate via PM, is a reprogramming of the ECU. This electronically disables the EGR valve (meaning it is set shut and stays shut) so no exhaust gas is recirculated. Not only can't this valve then stick and cause surging, but no dirty burned fuel is recirculated back through the cylinders and the engine breaths and remains cleaner. The engine management light won't come on because of this disabling, and still works for any other issues the light might be activated for, so other potential problems won't be masked.
I guarantee that any Puma owner that gets into 6 figure mileage with their vehicles will find issues that are directly attributable to the EGR valve. They are required to be fitted under EU emission laws; the irony being you'll use less fuel and get better performance with the thing disabled.
My remap also boosts power and torque... Power by 20 odd percentage (from memory) but with 100 extra Nm of torque. Bigger performance gains can be made too with further mods (larger intercoolers etc). Although others post to the contrary, I do not believe anyone makes a blanking plate that will not activate the engine management light (if the valve is blanked, it's just not possible to prevent without software modification) without the plate having drilled holes to allow some airflow. And if you do that, you haven't blanked off anything really, and with further km the problems will return.
Check out these links......
ATRIC Remap module (Late cars)
BAS Remap interface, Giving you control over your remap ! | Diesel performance tuning and economy remap chip tuning for Landrover Defender Discovery TD5 Puma TDV6 TDV8
Land Rover, Range Rover Service, Performance, Parts and Accessories
I have a Bruce Davis flash.... It's the same as an Alive tune (under license from Alive) with some mods for Oz conditions, and contrary to what others here will say, Bruce will also provide the Atric consul so the owner can put the factory map back in cases where the vehicle requires Land Rover Australia servicing. My setup includes a consul - you just need to ask for one. (I never use LRA anymore anyway and my vehicle is all the better for it!)

