ECU Tuner _ DPF delete possibilities.

[poyta]

Ah really? Thats neat, thought Superchips were the only one who did that.

The JBS pipe is £268.08 ~= AU$410, I dont think thats too bad, how much is the shipping? Maybe a shipping forwarder would bring the cost down.

Any ideas on what a Miltek pipe costs landed?

Not sure if Gavin can do a better deal with code + pipe but if you order direct from the website like you said its $410 for the pipe then its $310 to freight it to Australia. All up $720 for the pipe landed. Then of course you need to add the cost for the coding.

[h100vw]

Once the delete pipe is packaged to prevent damage, it becomes pretty big.

TBH I didn't make much if anything on those first 4 pipes, as a 2K package at the time it was pretty reasonable.

I am able to better the price of the software by a good margin these days.

Cheers

Gavin

[jazd]

Anyone seen this post? Shows pictures of a PD170 DPF being removed and gutted.

Also found this video which is a little worrying, I didnt expect there would be that much smoke.

[Greg Roles]

Yeah I wouldn't feel good producing that at each set of lights. Odd to be that smokey in such a cold climate - denser air - should equal less soot. Too much fuel in the map off boost, but I'm no engine tuner, seems to be a lot of work to produce high power low soot diesels without a DPF. Still, it's my aim....

Half the problem is the fact they use the stock tips. All the non DPF 103kw cars have a downswept tip pointing at the road, which is what I would do, and have a fake pair of tips just for show. Makes a lot less obtrusion on those following.

[poyta]

Anyone seen this post? Shows pictures of a PD170 DPF being removed and gutted.

Surely it can't be that easy? By removing all the inside your essentially created a giant box where the smaller exhaust outlet suddenly enters a big open area then its all forced to go back through the smaller outlet again to go out the exaust. Surely that will lead to some kind of backpressure issues with the turbo?

[CustomSpooling]

Anyone seen this post? Shows pictures of a PD170 DPF being removed and gutted.

Also found this video which is a little worrying, I didnt expect there would be that much smoke.

Wow that Leon needs tuned. It looks like there could be a tuning box fitted or else only the injector maps were altered. Should that have been tuned correctly you would NOT see that kind of smoke. You would see the same amount as a non-dpf equipped modern diesel which is practically no smoke.

[CustomSpooling]

Surely it can't be that easy? By removing all the inside your essentially created a giant box where the smaller exhaust outlet suddenly enters a big open area then its all forced to go back through the smaller outlet again to go out the exaust. Surely that will lead to some kind of backpressure issues with the turbo?

It works very well. As you cannot see in the picture, one exit side of that DPF can is a wide exit - this reduces possibilities of "turbulence". This is the same method as we do and it works perfect. You are always guaranteed that the pipe will fit 100% as opposed to some aftermarket pipes may need some fabricating.

As for turbo back pressure - by deleting DPF you have removed a hell of alot back pressure!

[gldgti]

guys, that seat leon (apart from being cool as) is not that surprising. for starters, it looks freezing cold. the car may have just been started up. second, its in neutral. Theres zero load on the engine, which is the best way to make soot since the turbo will have a very hard time spooling. theres no way any map will be configured to run as little fuel as would be needed to produce no soot in a zero load full throttle application - you want the engine to actually speed up, you need to add more fuel - it also seems to me like when the car is held at higher revs for a little bit the smoke clears up a bit - as some boost comes along.

You could make just about any diesel vehicle that doesnt have a dpf make that kind of smoke under those conditions. I'm also certain you could drive that vehicle without producing nearly that kind of smoke out of the back.

I might even take a video of my own to demonstrate what I mean.

[CustomSpooling]

guys, that seat leon (apart from being cool as) is not that surprising. for starters, it looks freezing cold. the car may have just been started up. second, its in neutral. Theres zero load on the engine, which is the best way to make soot since the turbo will have a very hard time spooling. theres no way any map will be configured to run as little fuel as would be needed to produce no soot in a zero load full throttle application from idle - you want the engine to actually speed up, you need to add more fuel.

Try to analyse what you are actually seeing rather than state things that really are assumptions. You could make any diesel vehicle that doesnt have a dpf make that kind of smoke under those conditions. I'm also certain you could drive that vehicle without producing nearly that kind of smoke out of the back.

I might even take a video of my own to demonstrate what I mean.

I have to dis-agree with your statement

That amount of smoke is completely un-acceptable. Imagine going to an emissions test centre and with a rev at idle it produces that amount of smoke - I think the tester will choke to death!

There are Load maps in the tune which should be tuned for No load. That Leon is over-fueling way too much. The O2 sensor in the exhaust is also a sensor for smoke limits. It is obviously messed with or fooled.

I cannot agree with you that amount of smoke is normal. Not even in those conditions. For idle, that car is over-fueling. It needs tuned.

[gldgti]

Should that have been tuned correctly you would NOT see that kind of smoke. You would see the same amount as a non-dpf equipped modern diesel which is practically no smoke.

I would have to see it to believe it. I've never seen any diesel car produce no smoke, and i've seen plenty of dpf cars make smoke, tuned or not. its just a fact of operating a diesel engine dynamically. you can tune it to be smoke free at constant load, but you can't tune it to predict what the driver will do with his foot next.

[gldgti]

I have to dis-agree with your statement

That amount of smoke is completely un-acceptable. Imagine going to an emissions test centre and with a rev at idle it produces that amount of smoke - I think the tester will choke to death!

There are Load maps in the tune which should be tuned for No load. That Leon is over-fueling way too much. The O2 sensor in the exhaust is also a sensor for smoke limits. It is obviously messed with or fooled.

I cannot agree with you that amount of smoke is normal. Not even in those conditions. For idle, that car is over-fueling. It needs tuned.

I didn't actually say that amount of smoke was normal. I agree it could be excessive. But its not amazing, and i'm sure it could be driven without much smoke. Its cool though, at least we are having a good discussion

[Greg Roles]

Well the GOOD news is a tuner thinks it's wrong, and so do I, regardless of the theory behind it.

To be fair my car with DPF has NEVER made even the tips sooty, and I've followed my car plenty of times, and there's never even the faintest hint of soot out the back. I appreciate you need to richen a mixture to get it to accelerate, especially at no load, but so too Banks in the USA seems to be able to build virtually soot free diesel monsters that put out pretty good numbers, and it's certainly what I want. If my TDI did that at idle, I'd be changing the tune regardless of the power loss, which according to Gale Banks, isn't as much as people think.

And believe me, I'm anal about the power.....

[gldgti]

Greg, I just find that really hard to believe. Even petrol cars make the tips sooty, eventually.

Oh well, I hope to be shown otherwise - I would like everyone to have soot free exhaust with no DPF

[Transporter]

Our Touareg even after 50,000km has still very clean exhaust tips. I posted this picture before; the dirty finger is from our non DPF Golf with very little km's on it and the clean one is from the Touareg tip with probably more than 15,000km.

But yeah, I agree, over the time when the engine goes through several regeneration cycles the exhaust tip won't be squeaky clean and will have some soot in it.

[CustomSpooling]

@ Transporter just out of interest, is your Touareg using the common rail engine or is it the v6 PD? And what golf have you? is it the PD?