Down Pipes?

bavboym3 · 05-03-2010, 01:01 PM

Do aftermarket DP's throw a CEL? Do they let you pass emissions? What do you reccomend?

Thanks!

ianthegreat · 05-03-2010, 01:03 PM

Depends. Depends. Search.

Very heavily covered topic.

TigerDejan · 05-03-2010, 01:30 PM

no they dont throw codes if u adjust it right ...

Mike@N54Tuning.com · 05-03-2010, 03:50 PM

Quote:

Originally Posted by bavboym3

Do aftermarket DP's throw a CEL? Do they let you pass emissions? What do you reccomend?

Thanks!

Are you talking about catted or cat less downpipes? You will need o2 sims with either most likely as BMW has tightened their o2 tolerances in their newer software.

Mike

mkPOTO · 05-03-2010, 03:54 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Are you talking about catted or cat less downpipes? You will need o2 sims with either most likely as BMW has tightened their o2 tolerances in their newer software.

Mike

+1 on mikes statement

Bimmer This · 05-03-2010, 04:28 PM

Catless ones will always throw codes without an O2 sim and proper adjustment. Catted ones shouldn't throw any codes.

alpinedevil335 · 05-03-2010, 05:21 PM

catless plus sim's = no lights

UAP1 · 05-03-2010, 05:34 PM

Quote:

Originally Posted by mkPOTO

+1 on mikes statement

+ 2 on Mikes Statement.

Don't you carry those Mike?

david @ eas · 05-03-2010, 05:55 PM

Correct... W/ Catless Dp's, you will throw a Catalytic Converter deficiency code.

ModBargains.com · 05-03-2010, 06:01 PM

Catless downpipes w/ O2Sims will not throw codes. However, if you use the catless dp without he O2Sim you will get a check engine light.

jonmizu · 05-03-2010, 06:56 PM

Hey does the cel cause "limp mode" ?

Bimmer This · 05-03-2010, 07:02 PM

Quote:

Originally Posted by jonmizu

Hey does the cel cause "limp mode" ?

Nope, just SES lights. Misfires and such will cause limp modes!

BOOSTED4DR · 05-05-2010, 10:36 AM

So basically you can run cattless DP's only flaw is a check engine light and no limpmodes

Mike@N54Tuning.com · 05-05-2010, 12:40 PM

Quote:

Originally Posted by UAP1

+ 2 on Mikes Statement.

Don't you carry those Mike?

Yup we carry the BMS downpipe Fix. Its the new V3 version which is adjustable

Mike

AlpineG05 · 05-05-2010, 03:21 PM

Quote:

Originally Posted by BOOSTED4DR

So basically you can run cattless DP's only flaw is a check engine light and no limpmodes

Yup pretty much.

snosk8tr123 · 05-05-2010, 03:30 PM

if you do not have any tune, is there any way to prevent a code?

UAP1 · 05-05-2010, 03:34 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Yup we carry the BMS downpipe Fix. Its the new V3 version which is adjustable

Mike

I got the new version when I bought my AR 3in DP's used.

Will have them both installed Saturday.

Heard this fix is A MUST and look forward to giving feedback.

I would suggest anybody that needs this mod contact Mike at N54 tuning. Great customer service!

Enicinitas · 05-05-2010, 05:24 PM

Off Topic - Sorry to jack the thread....

Anyone know if you have recently bought a CPO with an extended warranty and want to cancel the extended warranty - BEFORE you go over 4 yr, 48k mi, can you do this with BMW, or, are you locked into your sale. I'm considering asking my dealer. I just want to mod the car and use an independant dealer, and pay for whatever comes up. I know, I'm a little different. But I've found a great place that I like giving my business too, and, I think they already do a better job then what's been done with BMW already (HPFP / Injector). Thanks.

iwanna335 · 05-05-2010, 08:48 PM

Quote:

Originally Posted by Enicinitas

Off Topic - Sorry to jack the thread....

Anyone know if you have recently bought a CPO with an extended warranty and want to cancel the extended warranty - BEFORE you go over 4 yr, 48k mi, can you do this with BMW, or, are you locked into your sale. I'm considering asking my dealer. I just want to mod the car and use an independant dealer, and pay for whatever comes up. I know, I'm a little different. But I've found a great place that I like giving my business too, and, I think they already do a better job then what's been done with BMW already (HPFP / Injector). Thanks.

Why cancel it? Just get your car worked on wherever you want. If you don't want to have BMW fix your car at their cost go to any service provider and pay out of pocket

BMOEW · 05-05-2010, 08:52 PM

yea i just installed some vk catless downpipes put the fix in a day before that nothing came up

Syndicategt · 05-05-2010, 09:40 PM

Some catted DP's can even throw codes with the new BMW software 37.x I'm lucky and have not had this happen, but there are those who have.

Schnitzel · 05-09-2010, 06:11 PM

I have RR catted downpipes and since yesterday I get a CEL despite installed o2 sims. How is that possible? By now I had no problems. I got the CEL after a high speed drive on the German Autobahn (about 180mph).

Codes:

2C9F AfterCat 02 sensor heater input signal, BANK 2
2C9C PreCat 02 sensor heater input signal, BANK 1
2C9D PreCat 02 sensor heater input signal, BANK 2
2C9E AfterCat 02 sensor heater input signal, BANK 1

Any ideas?
THX

05-03-2010, 01:01 PM	#1
bavboym3 Second Lieutenant 27 Rep 290 Posts Drives: AW/IR 335cp Join Date: Dec 2007 Location: Pittsburgh iTrader: (1)	Down Pipes? Do aftermarket DP's throw a CEL? Do they let you pass emissions? What do you reccomend? Thanks!
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05-03-2010, 01:03 PM	#2
ianthegreat Colonel 60 Rep 2,314 Posts Drives: n54 Join Date: Apr 2008 Location: Pittsburgh/Houston iTrader: (1)	Depends. Depends. Search. Very heavily covered topic.
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05-03-2010, 01:30 PM	#3
TigerDejan Captain 61 Rep 919 Posts Drives: Bmw 335i Coupe Join Date: Feb 2009 Location: Sweden iTrader: (2)	no they dont throw codes if u adjust it right ... __________________ Current:Bmw 325D E90 LCI Edition Sport \| BSM \| M-Tech \| Comfort-Pkg \| 6MT \| OEM 18" 193M \| Alcantara Seats \| ESS Tuning Custom Stage 2 \| OEM Performance Grill \| FK Street Coilovers \| CF Emblems \| Sold: Bmw 335i E92 - Fully Loaded - Stage 3+
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05-03-2010, 04:28 PM	#6
Bimmer This Major General 99 Rep 6,473 Posts Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster iTrader: (3)	Catless ones will always throw codes without an O2 sim and proper adjustment. Catted ones shouldn't throw any codes.
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05-03-2010, 05:21 PM	#7
alpinedevil335 Lieutenant 20 Rep 433 Posts Drives: Alpine White 335i Join Date: Apr 2009 Location: So Cal (562) iTrader: (0)	catless plus sim's = no lights
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05-03-2010, 05:55 PM	#9
david @ eas 256 Rep 4,048 Posts Drives: BMW Join Date: Mar 2008 Location: Anaheim iTrader: (5)	Correct... W/ Catless Dp's, you will throw a Catalytic Converter deficiency code.
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05-03-2010, 06:01 PM	#10
ModBargains.com Banned 475 Rep 13,583 Posts Drives: JB E92 335i Join Date: Feb 2008 Location: 1721 E. Lambert Rd #C, La Habra, CA 90631 iTrader: (51)	Catless downpipes w/ O2Sims will not throw codes. However, if you use the catless dp without he O2Sim you will get a check engine light.
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05-03-2010, 06:56 PM	#11
jonmizu New Member 2 Rep 15 Posts Drives: 335i coupe Join Date: Mar 2010 Location: honolulu iTrader: (1)	Hey does the cel cause "limp mode" ?
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05-05-2010, 10:36 AM	#13
BOOSTED4DR Captain 29 Rep 932 Posts Drives: 07 335i Join Date: Oct 2009 Location: BK,NYC iTrader: (6)	So basically you can run cattless DP's only flaw is a check engine light and no limpmodes
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05-05-2010, 03:30 PM	#16
snosk8tr123 Second Lieutenant 19 Rep 243 Posts Drives: E90 335i 6mt M Sport AW/Saddle Join Date: Sep 2006 Location: OC iTrader: (4)	if you do not have any tune, is there any way to prevent a code? __________________ B7 Audi A4 -Gone- Nissan 240 S13 -Gone- E90 335i M Sport 6mt AW/Saddle: Gloss black grilles, gloss black vinyl roof, painted reflectors, Procede V5, UR Catless DP, Harmon Motive catback, Alufelgen SF-71, Duke Dynamics trunk, Bilstein PSS10, Nokya yellow angel eyes
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05-05-2010, 05:24 PM	#18
Enicinitas First Lieutenant 13 Rep 322 Posts Drives: Gray Coupe Join Date: Feb 2010 Location: Left Coast iTrader: (8)	Off Topic - Sorry to jack the thread.... Anyone know if you have recently bought a CPO with an extended warranty and want to cancel the extended warranty - BEFORE you go over 4 yr, 48k mi, can you do this with BMW, or, are you locked into your sale. I'm considering asking my dealer. I just want to mod the car and use an independant dealer, and pay for whatever comes up. I know, I'm a little different. But I've found a great place that I like giving my business too, and, I think they already do a better job then what's been done with BMW already (HPFP / Injector). Thanks.
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05-05-2010, 08:52 PM	#20
BMOEW Lieutenant Colonel 121 Rep 1,665 Posts Drives: 2011 335is AW Join Date: Apr 2009 Location: dallas, tx: Lebanon iTrader: (6)	yea i just installed some vk catless downpipes put the fix in a day before that nothing came up
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05-05-2010, 09:40 PM	#21
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Some catted DP's can even throw codes with the new BMW software 37.x I'm lucky and have not had this happen, but there are those who have. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-09-2010, 06:11 PM	#22
Schnitzel Private First Class 10 Rep 147 Posts Drives: E92 335i MT Join Date: Mar 2009 Location: Bavaria iTrader: (0)	I have RR catted downpipes and since yesterday I get a CEL despite installed o2 sims. How is that possible? By now I had no problems. I got the CEL after a high speed drive on the German Autobahn (about 180mph). Codes: 2C9F AfterCat 02 sensor heater input signal, BANK 2 2C9C PreCat 02 sensor heater input signal, BANK 1 2C9D PreCat 02 sensor heater input signal, BANK 2 2C9E AfterCat 02 sensor heater input signal, BANK 1 Any ideas? THX
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