Want Catless DPs

bonsai · 11-14-2010, 02:15 PM

Hey guys. I'm seriously considering getting some catless DPs for my 2009 335i E92. I have JB3 and BMS DCI.

My question is this - what will I need to know/have to get 3" DPs (catless) working without any errors on my car? Am I wrong in thinking that all I will need is the DP, an O2 sensor fix (DPS? BMS?) for my ECU, and some elbow grease. Also, will the DPS v2 fix work with my JB3?

Thanks for your help. I've been scouring this forum, but I can't seem to find any guides/DIY for DPs.

KyLu II · 11-14-2010, 02:20 PM

Quote:

Originally Posted by bonsai

Hey guys. I'm seriously considering getting some catless DPs for my 2009 335i E92. I have JB3 and BMS DCI.

My question is this - what will I need to know/have to get 3" DPs (catless) working without any errors on my car? Am I wrong in thinking that all I will need is the DP, an O2 sensor fix (DPS? BMS?) for my ECU, and some elbow grease. Also, will the DPS v2 fix work with my JB3?

Thanks for your help. I've been scouring this forum, but I can't seem to find any guides/DIY for DPs.

bonsai · 11-14-2010, 02:40 PM

Yeah yeah. I did search. :P

I actually just found a DIY on N54tech. Here's the link:
http://www.n54tech.com/forums/showthread.php?t=145

Bimmer This · 11-14-2010, 02:59 PM

all you should need is DP and O2 modifier.

Bimmer Nerd · 11-14-2010, 03:00 PM

Quote:

Originally Posted by Bimmer This

all you should need is DP and O2 modifier.

+1, downpipes of your choice + O2 Sim fix from BMS.

Mrbig · 11-14-2010, 04:04 PM

Which downpipes is the best for easy install so u can swap wen service is due ?

bonsai · 11-14-2010, 05:32 PM

From the looks of the DIY I posted above, I think all DP installs are similar (if not identical). Please correct me if I'm wrong on that.

Bimmer This · 11-14-2010, 07:31 PM

2.5" DP will most likely be easier because of the room you get in between each DP where as 3" DP would be more troublesome on getting them to fit without contacting each other.

Mrbig · 11-15-2010, 01:40 AM

Does make sense smaller easier in tight spaces but any thing else or people with the 335is with downpipes ?

ar design · 11-15-2010, 04:02 PM

Quote:

Originally Posted by bonsai

Hey guys. I'm seriously considering getting some catless DPs for my 2009 335i E92. I have JB3 and BMS DCI.

My question is this - what will I need to know/have to get 3" DPs (catless) working without any errors on my car? Am I wrong in thinking that all I will need is the DP, an O2 sensor fix (DPS? BMS?) for my ECU, and some elbow grease. Also, will the DPS v2 fix work with my JB3?

Thanks for your help. I've been scouring this forum, but I can't seem to find any guides/DIY for DPs.

Yup, DPs and a BMS DP Fix V3 will do the trick!

11-14-2010, 02:15 PM	#1
bonsai OG 3er 87 Rep 295 Posts Drives: 2016 F80 M3/2018 F82 M4 Compet Join Date: Sep 2007 Location: San Francisco, CA. iTrader: (0)	Want Catless DPs - What do I need to know? Hey guys. I'm seriously considering getting some catless DPs for my 2009 335i E92. I have JB3 and BMS DCI. My question is this - what will I need to know/have to get 3" DPs (catless) working without any errors on my car? Am I wrong in thinking that all I will need is the DP, an O2 sensor fix (DPS? BMS?) for my ECU, and some elbow grease. Also, will the DPS v2 fix work with my JB3? Thanks for your help. I've been scouring this forum, but I can't seem to find any guides/DIY for DPs.
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11-14-2010, 02:40 PM	#3
bonsai OG 3er 87 Rep 295 Posts Drives: 2016 F80 M3/2018 F82 M4 Compet Join Date: Sep 2007 Location: San Francisco, CA. iTrader: (0)	Yeah yeah. I did search. :P I actually just found a DIY on N54tech. Here's the link: http://www.n54tech.com/forums/showthread.php?t=145
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11-14-2010, 02:59 PM	#4
Bimmer This Major General 107 Rep 6,473 Posts Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster iTrader: (3)	all you should need is DP and O2 modifier.
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11-14-2010, 04:04 PM	#6
Mrbig Major 118 Rep 1,470 Posts Drives: 15 M3 Join Date: May 2007 Location: N.Y.C iTrader: (1)	Which downpipes is the best for easy install so u can swap wen service is due ?
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11-14-2010, 05:32 PM	#7
bonsai OG 3er 87 Rep 295 Posts Drives: 2016 F80 M3/2018 F82 M4 Compet Join Date: Sep 2007 Location: San Francisco, CA. iTrader: (0)	From the looks of the DIY I posted above, I think all DP installs are similar (if not identical). Please correct me if I'm wrong on that.
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11-14-2010, 07:31 PM	#8
Bimmer This Major General 107 Rep 6,473 Posts Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster iTrader: (3)	2.5" DP will most likely be easier because of the room you get in between each DP where as 3" DP would be more troublesome on getting them to fit without contacting each other.
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11-15-2010, 01:40 AM	#9
Mrbig Major 118 Rep 1,470 Posts Drives: 15 M3 Join Date: May 2007 Location: N.Y.C iTrader: (1)	Does make sense smaller easier in tight spaces but any thing else or people with the 335is with downpipes ?
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