[mol]

Not the proper forum for it, I know, but while I have your attention and were kind of on the subject...any of you familiar with someone in the Midwest that will help with tuning/coding out the EGR and bypassing the DPF?

[DieselRacer]

Originally Posted by mol

On a separate note...

Who thought it was a good idea to have this car's intake sucking very hot air directly off of the rear of the exhaust manifold?

try living in AZ with it, it is 115 here today, the manifold on my car must be on fire, I need to get a temp on it, I will...

[Hoooper]

Originally Posted by TDIwyse

Isn't there a spring/baffle type structure on that path? It seemed to me like that was an emergency type of air source in case something plugged the main intake path. Thought it was like that so the system would notice a significantly higher intake temp at the MAF so it would know something was obstructing the main air inlet. But that was just a guess for why it was there...

I dont recall there being any obstruction in that path when I was looking at it. It has been a while though

[TDIwyse]

Originally Posted by Hoooper

I dont recall there being any obstruction in that path when I was looking at it. It has been a while though

Well, I can't remember for sure either. I've got it set aside in the garage as I'm running an AEM cone filter and redneck cold air intake to make room for the crankcase ventillation filter ... I'll go check it out. Here, hold my beer.

[mol]

I've never been one to waste money on CAIs, but my background is primarily 4x4/rock crawling. Is there an advantage here outside of the ridiculous hp and fuel economy gains from the manufacturers (like moving the intake away from the manifold)?

Or is the thought similar across the board?

[TDIwyse]

Originally Posted by TDIwyse

Well, I can't remember for sure either. I've got it set aside in the garage as I'm running an AEM cone filter and redneck cold air intake to make room for the crankcase ventillation filter ... I'll go check it out. Here, hold my beer.

At least on mine there's a spring loaded baffle thingy. It shouldn't let in hot air from the turbo's unless there's a blockage.

[TDIwyse]

Originally Posted by mol

I've never been one to waste money on CAIs, but my background is primarily 4x4/rock crawling. Is there an advantage here outside of the ridiculous hp and fuel economy gains from the manufacturers (like moving the intake away from the manifold)?

Or is the thought similar across the board?

I did it mainly for space savings to fit the CCV filter where I wanted it. It is a little less weight than the OEM setup. It does add some intake sound to the driving experience that I like. The OEM setup did a great job of providing cool air as measured at the MAF versus ambient temps. No advantage to be gained from that aspect that I could quantify. Peak hp numbers were not hurt and may have been slightly better with the AEM. The best 1/4 mile pulls came with the AEM setup, but there were also a lot of other changes that had much more significant quantifiable benefits.

[mol]

Ah I see what you mean with the intake...clever

[BB_cuda]

Perhaps I am blind. I do not see the melted hose. I took a guess at what I see as a damaged hose. Is this it?

I re-attached the hoses that TDI mentions that do the DPF pressure differential measurement. They are a flimsy mesh. I don't see those black braided hoses in this photo though. Like i said, i could just be blind.

[mol]

Yep that's it.

the hose that you're referring to I'm assuming is the line coming from the actuator (the silver canister in the background of this photo), blue in this pic? That's not where my problem is

[TDIwyse]

Originally Posted by mol

Yep that's it.

the hose that you're referring to I'm assuming is the line coming from the actuator (the silver canister in the background of this photo), blue in this pic? That's not where my problem is

Oh ... maybe it's not the DPF pressure lines then. This is one of the connection points (see arrow) I was talking about.

[mol]

Yeah that's it, we're on the same page. It was the dpf pressure line and I replaced the pressure sensor as a precautionary measure. Running just fine now. My reference to the blue line was just a guess at the braided line Cuda was talking about.

Thanks for all of the help!

[BB_cuda]

I guess TDI does win the honorary 6 pack after all then. I wasn't able to slide those tubes on the Ecotune lines very far. Maybe 3/4". I'm thinking a hose clamp on them might be in order to keep them from slipping off.

[TDIwyse]

Originally Posted by BB_cuda

I guess TDI does win the honorary 6 pack after all then. I wasn't able to slide those tubes on the Ecotune lines very far. Maybe 3/4". I'm thinking a hose clamp on them might be in order to keep them from slipping off.

On our 335d's BMW used a "differential pressure sensor". On the Ecotune downpipe those two tubes are seeing the same pressure and the "differential" signal is basically 0 (verified with Bav Tech across full fueling runs). I pulled those hoses off and let them dangle, then plugged the ends of the pipe tubes (joined together with a piece of fuel line) and re-checked performance. No impacts measured and have been running this way for a couple weeks.

So if your tubes are a little short to join with the Ecotune pipe you can likely do something similar without issue.

[mol]

Originally Posted by TDIwyse

On our 335d's BMW used a "differential pressure sensor". On the Ecotune downpipe those two tubes are seeing the same pressure and the "differential" signal is basically 0 (verified with Bav Tech across full fueling runs). I pulled those hoses off and let them dangle, then plugged the ends of the pipe tubes (joined together with a piece of fuel line) and re-checked performance. No impacts measured and have been running this way for a couple weeks.

So if your tubes are a little short to join with the Ecotune pipe you can likely do something similar without issue.

Purpose?

Response is a little delayed, sorry

[clark.stanfill]

Originally Posted by mol

Found the culprit...don't know how I looked right over it so many times. Melted line from the pressure sensor. The nearest parts were in KY, hopefully theyll be here tomorrow.

Any chance you could post pictures. I'm having the same issue but am a complete waste when it comes to diesels. I'm planning on doing this myself but am clearly not on the same plane as most of you.

[Twilight1]

Op, I'm glad you found the problem because there are few more repulsive smells than raw diesel. Yuck!

[clark.stanfill]

Originally Posted by BB_cuda

Perhaps I am blind. I do not see the melted hose. I took a guess at what I see as a damaged hose. Is this it?

I re-attached the hoses that TDI mentions that do the DPF pressure differential measurement. They are a flimsy mesh. I don't see those black braided hoses in this photo though. Like i said, i could just be blind.

Hey -- I'm having the same issue, and can see the melted hose. Trying to get the parts in but have no idea what the hose would be called? Air-pump record hose? Anyone have a part number or anything else??

[rogerdiaz]

Originally Posted by clark.stanfill

Hey -- I'm having the same issue, and can see the melted hose. Trying to get the parts in but have no idea what the hose would be called? Air-pump record hose? Anyone have a part number or anything else??

Any up close pics of this pressure sensor melt?

[WreckerX5d]

The P/N to this is 13627812806, price is $51 or $31 with CCA discount. I ended up just filling the bolt up with liquid metal and placed it back into the turbo without the hose. The car seems to run fine without it.

[Yozh]

Originally Posted by Wrecker335d

The P/N to this is 13627812806, price is $51 or $31 with CCA discount. I ended up just filling the bolt up with liquid metal and placed it back into the turbo without the hose. The car seems to run fine without it.

Interesting. I wonder if BPC has done the tune that does not need an exhaust pressure sensors. Skeptical. May be Bob can comment.

[davethetenor]

I'm glad I found this thread! I have the exact same symptoms: diesel smell in the cabin, and a hissing noise from the rear passenger side of the engine compartment upon acceleration under load. The hissing is dramatically reduced when revving in neutral.

Upon inspection, I did indeed find a hose that has been completely melted through.





I'm having a bit of trouble identifying the hose, though. Is it part #9 that plugs into #6, the pressure sensor?