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Old 11-05-2012   #16
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Re: DPF removal!

Well the DPF is gutted and refitted and the Croma is going in tomorrow to have the remap. Thank you Hellcat, I checked the flexi and its starting to blow on top at the DPF end. It was completely hidden from the underneath. I will have to replace that soon, though it doesn't seem too bad at the moment.
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Old 12-05-2012   #17
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Re: DPF removal!

I have done approximately 50 miles since the remap this morning - and I haven't stopped smiling yet! The car now behaves as it should have done from the beginning and the power delivery is fantastic.

What I like is that the power comes on tap when you want it too. The Croma still feels like a relaxing cruiser, but when you want to overtake it's so effortless and safe. No more warning lights and no more shuddering etc. It was an educated guess when I thought that the DPF was causing my Turbo problems, so I am glad that I was proven right.

A word of warning though to anyone who wants to remove their DPF, try and get it all done at the same place. I had to drive the car with the DPF removed and it wasn't happy at all ;O)
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Old 12-05-2012   #18
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Re: DPF removal!

That is awesome news.Has the remap been done just to flash the dpf of the control unit or an increase in power too.Any black smoke?What about the gearbox performance?
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Old 12-05-2012   #19
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Thumbs up Re: DPF removal!

Thanks Buster, the ECU was remapped for power as well as deleting the DPF function. The quoted figure is 250 Bhp! The first couple of times I accelerated hard, there was the usual black smoke that is normal with non DPF cars, but there hasn't been any further smoke. Just needed a good clear out. The gearbox hasn't been affected at all, I just need to sort out the manual side to make the most of the power ;O)
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Old 12-05-2012   #20
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Re: DPF removal!

Im tempted myself.Thats a lot of power.did you get a torque figure?
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Old 13-05-2012   #21
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Re: DPF removal!

http://www.theaa.com/motoring_advice...nges-2012.html

Be careful guys when taking of the DPF, under the new vehicle test rules in force from 2012 - see link above, it is an instant fail if a standard exhaust CAT is removed or tampered with. There are lots of other changes mainly relating to the dash board warning lamp operation
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Old 13-05-2012   #22
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Re: DPF removal!

Torque is quoted as 358 lbft. I questioned them about the gearbox handling that much torque. They said that is a safe figure for the box, they have done several long term cars that are running far more power. I am just happy to have the car running properly, the extra power is a nice bonus.

Thanks for the heads up bobbyblue. Fortunately the DPF is not part of the MOT yet (even for post 2009 cars) and may not be for a long time. It's taken 20 years for the MOT to outlaw pre '92 car's cat removal (prob another ploy to get older cars off the road) so not overly worried about the DPF at the moment. As I said in my earlier posts, I have gutted the original unit so there is no way of knowing that anything has been removed, plus it's easily reversible.

As for the other changes, it's getting to the point where anything older than 10 years will almost definitely fail. I would not want to be an MOT tester, that's for sure! I totally agree that car's need to be thoroughly checked over regularly, so that they can be as safe as possible, but it's getting to the point where an MOT could take several hours, with a price to match.
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Old 13-05-2012   #23
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Re: DPF removal!

Quote Originally Posted by halilson View Post

As for the other changes, it's getting to the point where anything older than 10 years will almost definitely fail. I would not want to be an MOT tester, that's for sure! I totally agree that car's need to be thoroughly checked over regularly, so that they can be as safe as possible, but it's getting to the point where an MOT could take several hours, with a price to match.
It's more interference from Brussels, I also agree that cars should be safe but the way it's going I think they are trying to drive older cars off the road and outlaw any type of modification.
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Old 21-05-2012   #24
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Re: DPF removal!

After 10 days of DPF free motoring, I am happy to report that all is good. I am even happier to report that my local driving (albeit with more aggressive right foot) has returned an average of 42mpg! That's an improvement of 10 %, so I am quietly confident of high 40's, on a run with a less enthusiastic throttle
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Old 22-05-2012   #25
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Re: DPF removal!

Interesting stuff. I might be tempted to go down this route if/when my DPF needs replacing.

Diesel soot is a known carcinogen, so yes morality comes into it. However, you have to weigh this up against the likes of our local belching waste incinerator and completely unregulated shipping for anyone who lives near the coast. Plus aircraft belching god knows what over your head,the neighbour's coal fire and their frequent garden fires. I therefore don't see why I should be the only one that cares.

As it sounds like you'd already priced up a DPF, can you give the prices for replacing the DPF against the removal and remap that you did? Thanks.
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Old 22-05-2012   #26
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Re: DPF removal!

The remap was 275 + 50 to turn off the DPF. I paid 60 labour to remove the DPF, gut it and refit. The cheapest replacement DPF I could find was 250 delivered but you can pay well over a grand, so I'm not sure how good the cheaper one would be. Plus there would be the labour on top to fit it.

My logic was that for not much more than a replacement, I have prevented any future DPF problems and had a remap thrown in, which I would have had done eventually anyway.
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Old 22-05-2012   #27
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Re: DPF removal!

Did you get the EGR valve disabled at the same time?
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Old 22-05-2012   #28
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Re: DPF removal!

Quote Originally Posted by Doofer View Post
Diesel soot is a known carcinogen, so yes morality comes into it. However, you have to weigh this up against the likes of our local belching waste incinerator and completely unregulated shipping for anyone who lives near the coast. Plus aircraft belching god knows what over your head,the neighbour's coal fire and their frequent garden fires. I therefore don't see why I should be the only one that cares.

.
A year or so back there was talk about diesel prices going up quite a lot as there would soon be a greater call for it. Seemingly, it is difficult to clean up the emissions when burning marine diesel so the industry was looking to convert to DERV so they could use cats to clean their act up.

Sure I read somewhere that aircraft tend to carry more or less the minimum amount of fuel required for a flight & that sometimes they come in with too much fuel on board which is ejected (not sure how much truth there was to that one though.
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Old 22-05-2012   #29
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Re: DPF removal!

I just had the DPF disabled because the egr seems to be ok, as long as I clean it periodically. I knew that if I just replaced the DPF instead of removing it, I would have an ongoing problem with it.
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Old 23-05-2012   #30
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Re: DPF removal!

Aircraft takeoff capability far exceeds landing weight capability. Airlines fuel planes to just about the minimum level they can safely get away with so at then end of their journey they may only have enough fuel for one or two "go rounds" / aborted landings.

If critical problems develop after takeoff and it would be unsafe to burn off excess fuel then they can just dump fuel to bring the total aircraft weight down to the safe/rated landing limit.

Read here: http://www.airliners.net/aviation-fo....main/4102030/
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