Anzafin

Ok I looked a bit into it and it depends on the manufacturing date. If you have the combined DPF + catalytic converter, then you can find removing instructions here: https://5series.net/forums/e61-touri...3/#post1491139

- Antti -

masterofthefens

Hello Antti firstly a massive thankyou for this thread! Is the date of manufacture the same as Date of first registration if so that is 05/04/2005 if not can you please tell me how to find out, my apologise for being such a novice.

drbytes

So I have a M57N and the DPF ought to be easy to get out if the bolts are not seized up too tight. I was wondering if I could do as Anzafin and drill a hole through that bastard and get away with it? It's curently only listing 25KKM left so it'll go soon. However, what do I need to do after I drill it?
Is there coding that needs to be done, if so, what needs to be removed. Is there a tutorial somewhere?
Does it need to be remapped?

Cheers

drbytes

It's going to need a remap as the dpf will need to be coded out.
I'm now reading a bunch of posts about the turbo going tits up in just a few miles though alot of people have not bothered with configuring the turbo for the new flow and backpressure and their cars seem fine.
Confusing, alot of cr*p being posted by retailers as well, scare you into buying a pipe and software. sounds like a load of bollocks

jinsta

Anyone know what approx cost is just to code out? I'm already mapped

drbytes

200 euros for me and I've been mapped before. However, the guy hass to redo the map and put the car back on the bank to compensate for the change in exhaust flow.

jinsta

Feck, my original map cost me quite a bit, so guess i'm not gonna bother and just replace it like for like with stock

Picked up a low miler one with life and was going to gut that so my day of removal/fitting would be a quick one. Just got to keep the fingers crossed its the same one type as never under me car to check and looks like they did two models for the 2004 530d

Guessing no, but big bang theory aside...anyone run a gutted dpf on the motor without it being switched off with success or done it and actually had a big fail

drbytes

Listen, I'm not an expert on this, I've put in a good 8 hours reading posts the last few days and from what I gather : Replace dpf with tube is for people who like shiny crap and a project. Hole trough the DPF is supposedly better than stripping the ceramics completly (something to do with having the dpf work as expansion vessel for hot gas, made some sense) One big hole is better than several holes (sooth buildup could clogg up holes) . Hole should be diameter of piping. Remap for best practice (something with turbo over-spooling, a lot of contra dictionary stuff but my mapper knew that back flow blabla merits turbo VNT parameters adjustment). DPF needs to be de-activated in ECU. Dpf is a load of sh*te.
Good luck, I'm going to go forward with it this weekend.

drbytes

Also.. my ariginal map also costed me a ton but the mapper dude is happy to 'adjust' the mapping for this bargain price Too bad I can't code it out myself

jinsta

Will give me original mapper a shout and see how much of the wallet he will want Thought drilling out was just less hassle way vs cutting & welding, but will query this one too as only want to ever touch the bloody thing one time