N54 Downpipe Fix

Kwroz21 · 09-11-2016, 04:26 PM

Looking for anyone with experience installing a DP Fix (BMS/VRSF/X-Kitty)

I recently installed AR Design Catless Downpipes and a Cobb AP tuner. I now need to install a DP fix (bought mine from VRSF). The BMS DP fix install guide that's available online (

View post on imgur.com

) doesn't accurately represent my 09 N54 engine.

the manual calls out a yellow wires in slots 19 and 20. My car has a white wire in slot 19 and nothing in 20.

Has anyone installed a DP fix? Anyone come up against this issue?

litebulb · 09-12-2016, 01:36 AM

Hi,

I believe mine were a different colour as well. Just make sure you label which wire is which. Also, don't run the DPfix for too long as it will muck up your calibrations.

Quote:

Originally Posted by Kwroz21

Looking for anyone with experience installing a DP Fix (BMS/VRSF/X-Kitty)

I recently installed AR Design Catless Downpipes and a Cobb AP tuner. I now need to install a DP fix (bought mine from VRSF). The BMS DP fix install guide that's available online (

View post on imgur.com

) doesn't accurately represent my 09 N54 engine.

the manual calls out a yellow wires in slots 19 and 20. My car has a white wire in slot 19 and nothing in 20.

Has anyone installed a DP fix? Anyone come up against this issue?

cky751 · 09-12-2016, 08:51 AM

I have read that you only want to run the dp fix for a day or two. Can someone else confirm this?

vivanapoli806 · 09-12-2016, 10:29 AM

Quote:

Originally Posted by cky751

I have read that you only want to run the dp fix for a day or two. Can someone else confirm this?

Yes. It's only meant to be used to pass emissions then taken off. Couple days I would say. After that it begins to mess with afr.

lowbudgethero · 09-12-2016, 10:59 AM

Quote:

Originally Posted by vivanapoli806

Yes. It's only meant to be used to pass emissions then taken off. Couple days I would say. After that it begins to mess with afr.

how?

litebulb · 09-12-2016, 11:50 AM

It is possible with the DPfix to run too lean and rich.

Kwroz21 · 09-12-2016, 01:29 PM

In that case, do you recall what pins you used?
my pins 19 and 23 are populated but 20 isn't and i'm not sure what to do, I'd like to get it installed in as few attempts as possible

Quote:

Originally Posted by litebulb

Hi,

I believe mine were a different colour as well. Just make sure you label which wire is which. Also, don't run the DPfix for too long as it will muck up your calibrations.

lowbudgethero · 09-12-2016, 02:00 PM

Quote:

Originally Posted by litebulb

It is possible with the DPfix to run too lean and rich.

How though? I thought the DP fix only affected the secondary O2 sensors, which shouldn't cause any adjustment by the ECU.

lowbudgethero · 09-12-2016, 04:20 PM

Quote:

Originally Posted by lowbudgethero

How though? I thought the DP fix only affected the secondary O2 sensors, which shouldn't cause any adjustment by the ECU.

http://www.***********.com/showthrea...-Bypass-Switch

answered my own question

lowbudgethero · 09-12-2016, 04:21 PM

Quote:

Originally Posted by lowbudgethero

How though? I thought the DP fix only affected the secondary O2 sensors, which shouldn't cause any adjustment by the ECU.

answered my own question from reading another forum

litebulb · 09-12-2016, 07:23 PM

Sorry, I never ran into that issue. Also I did a bunch of reading before and after I installed the DPFix and don't recall any mentioning of missing wires.

Quote:

Originally Posted by Kwroz21

In that case, do you recall what pins you used?
my pins 19 and 23 are populated but 20 isn't and i'm not sure what to do, I'd like to get it installed in as few attempts as possible

09-11-2016, 04:26 PM	#1
Kwroz21 Enlisted Member 9 Rep 36 Posts Drives: 09 BMW E82 135i Join Date: Apr 2012 Location: Windsor, On iTrader: (0) Garage List 2009 BMW 135i [0.00]	N54 Downpipe Fix Looking for anyone with experience installing a DP Fix (BMS/VRSF/X-Kitty) I recently installed AR Design Catless Downpipes and a Cobb AP tuner. I now need to install a DP fix (bought mine from VRSF). The BMS DP fix install guide that's available online ( View post on imgur.com ) doesn't accurately represent my 09 N54 engine. the manual calls out a yellow wires in slots 19 and 20. My car has a white wire in slot 19 and nothing in 20. Has anyone installed a DP fix? Anyone come up against this issue? __________________ 2009 e82 135i
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09-12-2016, 08:51 AM	#3
cky751 Private 5 Rep 67 Posts Drives: '09 135i Join Date: Oct 2014 Location: SF Bay Area iTrader: (0)	I have read that you only want to run the dp fix for a day or two. Can someone else confirm this? __________________ '09 135i 6MT w/ M Package: JB4 g5 iso\|MHD BMS BEF\| BMS DCI\|Wagner rep. FMIC\| N54 Performance 3" DP's\|BMS Chargepipe \| BMS Inlets \| BMS Short Shifter \|Powerflex bushings \| Eldor Coils \|CDV Delete\|NGK\|RB PCV valve and cap\| Stage 2 LPFP
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09-12-2016, 11:50 AM	#6
litebulb Captain 68 Rep 627 Posts Drives: '09 E88 135i M-Sport/6MT/SGM Join Date: Feb 2011 Location: Vancouver iTrader: (3) Garage List 2009 BMW 135i Cabri ... [10.00]	It is possible with the DPfix to run too lean and rich. __________________ \| Dinan S2=>MHD \| e46 M3 trans mounts \| Dinan CF CAI \| ER CP \| HKS SSQV4 BOV \| RB PCV Valve \| VRSF DP \| N55 MP \| BMW PE \| OC \| VRSF 7" FMIC \| UUC Evo3 SSK \| EBC GD Sport Rotors \| EBC Redstuff \| TRW F+R \| \| Whiteline KDT918 \| H&R Front Sway \| BMWP 313 \| MPSS 225/255 \| Scopione CF Rear Diffuser \| iCarbon CF Rear Spoiler \| P3 v2.1 Gauge \| Interior LED Retrofit \|
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