DPF Delete

Puerto Rican 335d · 10-17-2014, 11:21 AM

BTW couldnt get EGT's cause seems like my torque reader is not picking up EGt but everything else is working temp for the day was 85 deg Fahrenheit

BB_cuda · 10-17-2014, 01:50 PM

Quote:

Originally Posted by Puerto Rican 335d

ok amigos I FINALLY did my dynos I will post as soon as I get the sheets, I clocked 340 whp vice 325 and 474 wtq vice 452. An increase of 15 whp and 22 wtq not bad for downpipe and 3" exhaust w 4'' exits.

don't forget the scoops

.

Nice to hear the news, Axel. If 325/452 was prior to DPF delete, you must have had lots of tune (i.e. more boost) before the DPF delete coding. A 15 hp change sounds more like only a delta hp from the flow gain. We in the other camp got the tuning and flow increase simultaneously. This makes sense to me atleast. On an old school muscle car (which i clearly know a modern diesel ain't) if you changed exhausts to headers and put hi flow exhaust system on, you would gain about 15 to 20 hp. I'm only stuck that the change in flow from a DPF to downpipe/hi flow exhaust is more dramatic than old school muscle example given above. Perhaps the pressure from turbo exit is lower than outlet press of an old school exhaust manifold. Point is less restriction might not matter as much if flow is lower to begin with because turbo is upstream

Hoooper · 10-17-2014, 02:29 PM

Quote:

Originally Posted by BB_cuda

don't forget the scoops

.

Nice to hear the news, Axel. If 325/452 was prior to DPF delete, you must have had lots of tune (i.e. more boost) before the DPF delete coding. A 15 hp change sounds more like only a delta hp from the flow gain. We in the other camp got the tuning and flow increase simultaneously. This makes sense to me atleast. On an old school muscle car (which i clearly know a modern diesel ain't) if you changed exhausts to headers and put hi flow exhaust system on, you would gain about 15 to 20 hp. I'm only stuck that the change in flow from a DPF to downpipe/hi flow exhaust is more dramatic than old school muscle example given above. Perhaps the pressure from turbo exit is lower than outlet press of an old school exhaust manifold. Point is less restriction might not matter as much if flow is lower to begin with because turbo is upstream

The pressure on the backside of a turbo should be lower than a comparable power exhaust manifold. Some of the pressure differential is used up spinning the turbo. It makes sense, if you had equal pressure on both sides of the turbo it wouldnt accelerate the turbo at all. Removing the DPF would reduce the pressure on the back side of the turbo which means it would spin up faster and acheive a faster top speed, which would mean more boost, especially below where it hit max boost before, and more efficient AKA cooler boost.

Puerto Rican 335d · 10-17-2014, 03:02 PM

I personally feel that the exhaust is within the limits. But also feel w 2.5 inch there would give some back pressure to assist the overspooling of the turbos but i might be wrong though.

Hoooper · 10-17-2014, 04:30 PM

Quote:

Originally Posted by Puerto Rican 335d

I personally feel that the exhaust is within the limits. But also feel w 2.5 inch there would give some back pressure to assist the overspooling of the turbos but i might be wrong though.

a single 2.5" for 340 WHP? That would be an outrage, especially since it should be pretty easy to control the turbo speed without sacrificing power and fuel economy

highrollindreamz · 10-19-2014, 05:51 PM

i started getting the no start in xx miles the other day.i recall seeing somebody else askin about this.is this an accurate warning.i thought the def wasnt used anymore??

2deerwhistlers · 10-19-2014, 06:54 PM

Quote:

Originally Posted by highrollindreamz

i started getting the no start in xx miles the other day.i recall seeing somebody else askin about this.is this an accurate warning.i thought the def wasnt used anymore??

Its been spraying def the whole time.. I got the no start message and drove to JR automotive in oakville Canada this past weekend for a new tune.. Nothing short of amazing and although the message is still there I know it's not injecting urea and I know my egr is finally at 0%

GreekboyD · 10-19-2014, 06:55 PM

Quote:

Originally Posted by highrollindreamz

i started getting the no start in xx miles the other day.i recall seeing somebody else askin about this.is this an accurate warning.i thought the def wasnt used anymore??

Did you go through Ecotune? I know my tuner will still see that message even though the car will keep running/starting after it hits 0 miles.

highrollindreamz · 10-19-2014, 08:02 PM

Quote:

Originally Posted by GreekboyD

Did you go through Ecotune? I know my tuner will still see that message even though the car will keep running/starting after it hits 0 miles.

yes.it is ecotune.yea.im just curious if it will actually do anything with the def empty and the message on

highrollindreamz · 10-19-2014, 08:04 PM

Quote:

Originally Posted by 2deerwhistlers

Its been spraying def the whole time.. I got the no start message and drove to JR automotive in oakville Canada this past weekend for a new tune.. Nothing short of amazing and although the message is still there I know it's not injecting urea and I know my egr is finally at 0%

yea.at this point im considering just getting it retuned.price from jr?

GreekboyD · 10-19-2014, 08:04 PM

Quote:

Originally Posted by highrollindreamz

Quote:

Originally Posted by GreekboyD

Did you go through Ecotune? I know my tuner will still see that message even though the car will keep running/starting after it hits 0 miles.

yes.it is ecotune.yea.im just curious if it will actually do anything with the def empty and the message on

Well seeing that 2deers had the same tune as yours and still had DEF usage, I'd be concerned if I was you.

2deerwhistlers · 10-19-2014, 08:04 PM

Quote:

Originally Posted by highrollindreamz

Quote:

Originally Posted by 2deerwhistlers

Its been spraying def the whole time.. I got the no start message and drove to JR automotive in oakville Canada this past weekend for a new tune.. Nothing short of amazing and although the message is still there I know it's not injecting urea and I know my egr is finally at 0%

yea.at this point im considering just getting it retuned.price from jr?

Go check the JR electronics thread.. First post lays it out

highrollindreamz · 10-19-2014, 08:23 PM

Quote:

Originally Posted by 2deerwhistlers

Go check the JR electronics thread.. First post lays it out

ill look for it.thanks

TDIwyse · 10-20-2014, 09:01 AM

Quote:

Originally Posted by 2deerwhistlers

... I got the no start message and drove to JR automotive in oakville Canada this past weekend for a new tune.. Nothing short of amazing and although the message is still there I know it's not injecting urea and I know my egr is finally at 0%

Will be interested to hear your evaluation. I've got a 2nd DDE I've been wondering what to do with ... have been considering sending it to JR.

I'm still not sure why my car is not giving the no start message, even after >12,000 miles with emptied DEF tanks, and everyone else seems to be getting it...

2deerwhistlers · 10-20-2014, 09:04 AM

Quote:

Originally Posted by TDIwyse

Quote:

Originally Posted by 2deerwhistlers

... I got the no start message and drove to JR automotive in oakville Canada this past weekend for a new tune.. Nothing short of amazing and although the message is still there I know it's not injecting urea and I know my egr is finally at 0%

Will be interested to hear your evaluation. I've got a 2nd DDE I've been wondering what to do with ... have been considering sending it to JR.

I'm still not sure why my car is not giving the no start message, even after >12,000 miles with emptied DEF tanks, and everyone else seems to be getting it...

Not sure about your message.. I've got a date with the dyno around 3 pm today..

iaknown · 10-20-2014, 09:57 AM

Quote:

Originally Posted by TDIwyse

Will be interested to hear your evaluation. I've got a 2nd DDE I've been wondering what to do with ... have been considering sending it to JR.

I'm still not sure why my car is not giving the no start message, even after >12,000 miles with emptied DEF tanks, and everyone else seems to be getting it...

Will the EWS allow you to send in one without reading the other?

Very interesting you have no message, while most of us are getting it. And I have other issues that you guys don't have. But I've confirmed I have a different tune than you guys have even though I'm told differently. Yet another reason to switch tuners....

Puerto Rican 335d · 10-20-2014, 11:12 AM

Hooper it was just a comment I currently have 3" from the dpipe to the back w 4" exits

TDIwyse · 10-20-2014, 12:44 PM

Quote:

Originally Posted by iaknown

Will the EWS allow you to send in one without reading the other?

Very interesting you have no message, while most of us are getting it. And I have other issues that you guys don't have. But I've confirmed I have a different tune than you guys have even though I'm told differently. Yet another reason to switch tuners....

I've "heard" that if they have they get both the original and a 2nd they can make both work. But I can't confirm that. If anyone else knows anything about this I'd be interested to learn more.

Yozh · 10-20-2014, 03:24 PM

Quote:

Originally Posted by iaknown

But I've confirmed I have a different tune than you guys have even though I'm told differently. Yet another reason to switch tuners....

Could you please give some details as to the differences you are referring to. I'm very interested in this.

vvs · 10-20-2014, 04:35 PM

soo i got def delete with downpipe...but i still have urea in my tank (i persume) ...is there any way i can empty the tank myself in both passive and active tank?

Yozh · 10-20-2014, 04:57 PM

This might help:
DEF Extraction and Refill.pdf

I believe there are two tubes that are in the location shown in step 4 that need to be disconnected and that shall drain your system. May be someone who has done that can chime in.

iaknown · 10-20-2014, 05:59 PM

Quote:

Originally Posted by Yozh

This might help:
Attachment 1107238

I believe there are two tubes that are in the location shown in step 4 that need to be disconnected and that shall drain your system. May be someone who has done that can chime in.

That's the way to do it. You can use a Mityvac/vacuum pump hooked to a large container to suck the fluid out as well.

10-17-2014, 11:21 AM	#2333
Puerto Rican 335d Brigadier General 236 Rep 3,488 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	BTW couldnt get EGT's cause seems like my torque reader is not picking up EGt but everything else is working temp for the day was 85 deg Fahrenheit __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-17-2014, 03:02 PM	#2336
Puerto Rican 335d Brigadier General 236 Rep 3,488 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	I personally feel that the exhaust is within the limits. But also feel w 2.5 inch there would give some back pressure to assist the overspooling of the turbos but i might be wrong though. __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-19-2014, 05:51 PM	#2338
highrollindreamz Private First Class 2 Rep 106 Posts Drives: 2011 335D Join Date: Apr 2014 Location: Tennessee iTrader: (0)	i started getting the no start in xx miles the other day.i recall seeing somebody else askin about this.is this an accurate warning.i thought the def wasnt used anymore??
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10-20-2014, 11:12 AM	#2349
Puerto Rican 335d Brigadier General 236 Rep 3,488 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	Hooper it was just a comment I currently have 3" from the dpipe to the back w 4" exits __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-20-2014, 04:35 PM	#2352
vvs Enlisted Member 4 Rep 44 Posts Drives: 335d Join Date: Mar 2013 Location: Toronto iTrader: (0)	soo i got def delete with downpipe...but i still have urea in my tank (i persume) ...is there any way i can empty the tank myself in both passive and active tank?
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10-20-2014, 04:57 PM	#2353
Yozh Colonel 880 Rep 2,611 Posts Drives: 2011 335d M-Sport Join Date: Mar 2014 Location: Wet Coast iTrader: (4)	This might help: DEF Extraction and Refill.pdf I believe there are two tubes that are in the location shown in step 4 that need to be disconnected and that shall drain your system. May be someone who has done that can chime in.
	Appreciate 0 Quote