You said to keep it simple, lol.
Had mine mapped by AmD, nothing wrong with the map, but the 170's are only worth having a map if you have had your DPF removed.
Basically, when the car is doing a re-gen the exhaust has to get up to a certain temp before the soot can be burned off, so this requires high revs.
Now with a map, you are using more torque and less revs, hence better fuel economy. But less revs means lower exhaust temp, and resulting in harder to burn off soot, thus blocking the DPF and the light coming on more frequently.
I only ever got the first warning and easily cleared with a quick blast, but it got to that point it was coming in every 3-4 days and that was with mixed road driving.
Since having it removed, I hardly get the light on, maybe 1-2 times a month. But I can always tell when my car is doing a re-gen, so take it for a high rev drive above 50 as soon as, even if the light has not come on.
