Coding/Tuning Out DMTL w/ Tune

Arsonism · 04-21-2015, 10:41 AM

This may be a rather silly question but I'm contemplating working through a TTFS tune to work around a bad O2 sensor and a headers upgrade. I was wondering if with tunes on our cars if it was possible to code the car to not check the Diagnostic Module Tank Leakage pump. Mine has a couple bad reports and it's preventing me from getting an inspection. I will likely replace it in the near future, just wondering if I can cut some corners for the inspection to make it more affordable now and pick up some CPI headers along the way.

Thanks in advance guys.

SCHMOUPE · 04-21-2015, 12:30 PM

Cant answer your question BUT, changing O2 sensors is not that complicated. I would spend some time and get those replaced. Also you dont have to buy directly from BMW. Our sensors are rebranded Bosch sensors and can be found on Amazon or other retailers for a fraction of what BMW charges.

Arsonism · 04-22-2015, 03:03 PM

I'm starting to look into them more, I was hoping that would have been my cost savings in upgrading to headers. It seems that for emissions here you can have one failure and I recently just hit both. I'll probably replace the O2's but I'm still curious about the DTML.

Thanks for the advice Schmoupe I found them on a few websites around 100 bones a piece, about 50% of the cost from BMW.

StickMon · 04-23-2015, 12:54 PM

Yea, thanks for the tip Schmoupe.
I'm at just about 120 k miles, so I've been wanting to buy a set to keep handy, but balked at $200 each.

SCHMOUPE · 04-24-2015, 08:41 AM

Quote:

Originally Posted by StickMon

Yea, thanks for the tip Schmoupe.
I'm at just about 120 k miles, so I've been wanting to buy a set to keep handy, but balked at $200 each.

I ended up changing all 4 of mine last year since I was getting an SES related to sensors and usually when one goes, others are not too far behind. I bought these off amazon and believe they are the pre-cat ones. post cat ones can be found for around the same price.

http://www.amazon.com/Bosch-15168-Ox...ds=bosch+15168

Arsonism · 04-24-2015, 12:07 PM

I don't know if I'll replace all four, but I'll definitely replace the pre-cats as one went bad. Maybe I'll get to the others. I fear I'm going to have to hold off on the headers until a little later.

Thanks again Schmoupe this is seriously helpful.

SCHMOUPE · 04-24-2015, 12:14 PM

Quote:

Originally Posted by Arsonism

I don't know if I'll replace all four, but I'll definitely replace the pre-cats as one went bad. Maybe I'll get to the others. I fear I'm going to have to hold off on the headers until a little later.

Thanks again Schmoupe this is seriously helpful.

Sure thing. Good luck!

Arsonism · 04-29-2015, 03:19 PM

Got in touch with Kyle from TTFS. This is doable if anyone was interested (it took them a while but they did get back to me on it).

04-21-2015, 10:41 AM	#1
Arsonism Captain 158 Rep 747 Posts Drives: '08 M Coupe Join Date: Oct 2013 Location: Austin, TX iTrader: (3)	Coding/Tuning Out DMTL w/ Tune This may be a rather silly question but I'm contemplating working through a TTFS tune to work around a bad O2 sensor and a headers upgrade. I was wondering if with tunes on our cars if it was possible to code the car to not check the Diagnostic Module Tank Leakage pump. Mine has a couple bad reports and it's preventing me from getting an inspection. I will likely replace it in the near future, just wondering if I can cut some corners for the inspection to make it more affordable now and pick up some CPI headers along the way. Thanks in advance guys.
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04-21-2015, 12:30 PM	#2
SCHMOUPE Lieutenant Colonel 127 Rep 1,772 Posts Drives: 2007 Z4M Coupe Join Date: Apr 2010 Location: NJ iTrader: (7) Garage List 2007 Z4M Coupe [0.00]	Cant answer your question BUT, changing O2 sensors is not that complicated. I would spend some time and get those replaced. Also you dont have to buy directly from BMW. Our sensors are rebranded Bosch sensors and can be found on Amazon or other retailers for a fraction of what BMW charges. __________________ Gruppe M CAI / Euro Headers / Rogue Engineering X-pipe / RE Diablo Exhaust
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04-22-2015, 03:03 PM	#3
Arsonism Captain 158 Rep 747 Posts Drives: '08 M Coupe Join Date: Oct 2013 Location: Austin, TX iTrader: (3)	I'm starting to look into them more, I was hoping that would have been my cost savings in upgrading to headers. It seems that for emissions here you can have one failure and I recently just hit both. I'll probably replace the O2's but I'm still curious about the DTML. Thanks for the advice Schmoupe I found them on a few websites around 100 bones a piece, about 50% of the cost from BMW.
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04-23-2015, 12:54 PM	#4
StickMon My other car is on Mars 636 Rep 3,124 Posts Drives: 2006 MR Join Date: Feb 2011 Location: Lo-Cal iTrader: (1)	Yea, thanks for the tip Schmoupe. I'm at just about 120 k miles, so I've been wanting to buy a set to keep handy, but balked at $200 each. __________________ Warning: May contain traces of nuts.
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04-24-2015, 12:07 PM	#6
Arsonism Captain 158 Rep 747 Posts Drives: '08 M Coupe Join Date: Oct 2013 Location: Austin, TX iTrader: (3)	I don't know if I'll replace all four, but I'll definitely replace the pre-cats as one went bad. Maybe I'll get to the others. I fear I'm going to have to hold off on the headers until a little later. Thanks again Schmoupe this is seriously helpful.
	Appreciate 0 Quote

04-29-2015, 03:19 PM	#8
Arsonism Captain 158 Rep 747 Posts Drives: '08 M Coupe Join Date: Oct 2013 Location: Austin, TX iTrader: (3)	Got in touch with Kyle from TTFS. This is doable if anyone was interested (it took them a while but they did get back to me on it).
	Appreciate 0 Quote