DPF/CAT Removal & Engine Re-map
On the general subject of DPF removal & re-mapping, I had my 159 2.4JTDM S/W done at Angel Tuning based at Cropredy Bridge (nr Banbury) last December, & although it hasn't had to go through an MOT yet, overall I'm very happy with the outcome, & I have no worries about the MOT. Power is up considerably, & my main impression straight after having the work done was that the car felt much 'lighter', due to the sharper throttle response.
Just 2 downsides to report so far:
1. You do need to be careful not to put your foot down too hard below around 1,500rpm, as the engine will falter, but really you shouldn't be doing that anyway. I don't know if other re-maps would have that outcome?
2. I didn't get the advertised fuel consumption improvement, but I guess that in practice, any efficiency gain from the DPF removal is offset by the remapped power improvement (which I enjoy using too much!). However, the on-board trip computer IS showing an improvement, but checking against actual fill-ups, it's now reading about 4mpg optimistic, whereas before it was pretty accurate. Angel Tuning reckon it may be due to a longer injection pulse from the re-map, with the trip computer calculating against the number of pulses, rather than actual quantity of fuel used. Perhaps they should be adjusting this when they install the re-map?
Overall, it was well worth doing, & in the end will save you the cost of a replacement DPF when it inevitably gets clogged up, as it will sooner or later. I say go for it & enjoy the extra horses released!