Calling out ALL forum members who's running COMPLETELY catless....

cstmx_ryder · 07-11-2009, 11:24 AM

I just want to try and isolate the issues/codes I'm seeing.

P0300 Random/Multiple Cylinder Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P2096 Post Catalyst Fuel Trim Bank 1 System Too Lean

Has anyone thrown those codes once going completely catless??

If was suggested by another member that running catless DPs was my problem. But I'm not completely catless, still have the OEM exhaust. I just want to see if other members can verify that as well............

TIA

NM_BMW · 07-11-2009, 11:28 AM

Quote:

Originally Posted by cstmx_ryder

I just want to try and isolate the issues/codes I'm seeing.

P0300 Random/Multiple Cylinder Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P2096 Post Catalyst Fuel Trim Bank 1 System Too Lean

Has anyone thrown those codes once going completely catless??

If was suggested by another member that running catless DPs was my problem. But I'm not completely catless, still have the OEM exhaust. I just want to see if other members can verify that as well............

TIA

It doesn't seem that going catless is causing the problem. Your running lean and having misfires. Possibly bad gas? Try lowering your UT and see what happens.

Xander · 07-11-2009, 11:58 AM

Did you hook up your O2 sims (the wrong way maybe)?

JayKay335i · 07-11-2009, 12:34 PM

You shouldn't be misfiring from going catless.

riceygts · 07-11-2009, 12:41 PM

I didn't have those codes when going completely catless.

jpsimon · 07-11-2009, 01:19 PM

I'm completely catless and haven't seen those codes

thread killer · 07-11-2009, 01:32 PM

your running lean on bank1. whats odd is its saying POST cat o2 is too lean. fuel trim is calculated off of PRE cat o2 sensors. POST cats are just for efficiancy monitoring of the cats.

bad injector. this could be an injector spraying too much or too little. too much, and it sees the BANK running rich, and will trim all 3 down to figgure out WTF is going on.
too little, and it will try to increase all 3 trying to figgure out WTF is going on, but will notice that fueling more causes more fuel, thus trims back down again. make sense?
bad gas.
bad tune.

ar design · 07-11-2009, 01:35 PM

That has nothing to do with running catless. Tune/gas issue probably.

A418t81 · 07-11-2009, 02:29 PM

Quote:

Originally Posted by ar design

That has nothing to do with running catless. Tune/gas issue probably.

Likely neither. It's related to a single bank so likely there's a bank 1 primary 02 sensor issue, a much less likely culprit is an injector problem.

Proper Motion LLC · 07-11-2009, 03:11 PM

I thought this was gonna be a Pro Green Earth thread

thread killer · 07-11-2009, 07:13 PM

Quote:

Originally Posted by A418t81

Likely neither. It's related to a single bank so likely there's a bank 1 primary 02 sensor issue, a much less likely culprit is an injector problem.

exactly. did you not read my post? what do you think 90% of all trim issues are? either too much fuel (injector) or too much air (air leak, or once again: injector)

if you want to eliminate the 02, just swap them bank to bank and see if the trim issue goes with it. if not, then its NOT the o2 sensor.

MrChessy · 07-11-2009, 07:17 PM

Quote:

Originally Posted by ar design

That has nothing to do with running catless. Tune/gas issue probably.

+1

MrChessy · 07-11-2009, 07:17 PM

Quote:

Originally Posted by 09AlpineTTSedan

I thought this was gonna be a Pro Green Earth thread

cstmx_ryder · 07-12-2009, 02:27 PM

Quote:

Originally Posted by Humtek

It doesn't seem that going catless is causing the problem. Your running lean and having misfires. Possibly bad gas? Try lowering your UT and see what happens.

Bad gas? Maybe once in a while, but not 4 times in 2 weeks? My tq value is at default on stg 3, which is 85%, should I lower it to 80%?

Quote:

Originally Posted by Xander

Did you hook up your O2 sims (the wrong way maybe)?

I'm sure I hooked it up right, I double checked all the wiring and connections...

Quote:

Originally Posted by JayKay335i

You shouldn't be misfiring from going catless.

That's what I thought!!

Quote:

Originally Posted by riceygts

I didn't have those codes when going completely catless.

Never heard of that either until one member brought it up as that being the issue.......

Quote:

Originally Posted by jpsimon

I'm completely catless and haven't seen those codes

Quote:

Originally Posted by thread killer

your running lean on bank1. whats odd is its saying POST cat o2 is too lean. fuel trim is calculated off of PRE cat o2 sensors. POST cats are just for efficiancy monitoring of the cats.

bad injector. this could be an injector spraying too much or too little. too much, and it sees the BANK running rich, and will trim all 3 down to figgure out WTF is going on.
too little, and it will try to increase all 3 trying to figgure out WTF is going on, but will notice that fueling more causes more fuel, thus trims back down again. make sense?
bad gas.
bad tune.

I thought it might be the injectors......This morning it gave me those codes again, so I switched coil 2 with 1, and 3 with 4, and problem persisted. So that led me to think that it's faulty injectors in cylinder 2 & 3?

Bad tune? I've had the PROcede for about a year now and just two weeks ago it started giving me this problem. Wouldn't it show much earlier if it were the tune? Just curious.........

TIA

TMR · 07-12-2009, 04:19 PM

Quote:

Originally Posted by riceygts

I didn't have those codes when going completely catless.

+1

hun77777 · 07-12-2009, 04:35 PM

i would go dig up on bad gas -> spark plugs -> injectors and coils, rather than cat... i had some code on o2 sensors and misfires but it stopped when i put new spark plugs...

lpphreakx06 · 07-12-2009, 04:36 PM

hmm He recently changed them out iirc

OpenFlash · 07-12-2009, 04:51 PM

Sounds like one of the o2 sensors was damaged during the dp install.

cstmx_ryder · 07-12-2009, 04:56 PM

Quote:

Originally Posted by lpphreakx06

hmm He recently changed them out iirc

^^yes, about 4-5 months ago, all six of them.

Quote:

Originally Posted by shiv@vishnu

Sounds like one of the o2 sensors was damaged during the dp install.

But wouldn't that show up much sooner? I've had the CL DPs and tune for about a year or so.......Nothing until now..........

Thinking about reverting back to the 5-29 maps.....

Shiv, is it okay to run the 5-29 maps on the newest firmware? Or do I have to reload the previous firmware?

TIA

OpenFlash · 07-12-2009, 05:04 PM

Quote:

Originally Posted by cstmx_ryder

^^yes, about 4-5 months ago, all six of them.

But wouldn't that show up much sooner? I've had the CL DPs and tune for about a year or so.......Nothing until now..........

Thinking about reverting back to the 5-29 maps.....

Shiv, is it okay to run the 5-29 maps on the newest firmware? Or do I have to reload the previous firmware?

TIA

These codes should have nothing to do with the maps. But the rule of thumb is to use the newest maps (7-03) with the newest firmware. I don't recommend updating one without the other. But I don't think that would fix the problem which is likely to be hardware related.

Shiv

cstmx_ryder · 07-12-2009, 05:16 PM

Quote:

Originally Posted by shiv@vishnu

These codes should have nothing to do with the maps. But the rule of thumb is to use the newest maps (7-03) with the newest firmware. I don't recommend updating one without the other. But I don't think that would fix the problem which is likely to be hardware related.

Shiv

I didn't think so either, but I thought I'd try all options to eliminate what's NOT causing the problem/issue.......

So your saying that it might be the O2 sensors? Or the RR O2 SIMS?

OpenFlash · 07-12-2009, 05:19 PM

Quote:

Originally Posted by cstmx_ryder

I didn't think so either, but I thought I'd try all options to eliminate what's NOT causing the problem/issue.......

So your saying that it might be the O2 sensors? Or the RR O2 SIMS?

Best thing to do would be eliminate variables. First thing would be to remove the RR o2 sims and see what happens.

Shiv

07-11-2009, 11:24 AM	#1
cstmx_ryder Colonel 164 Rep 2,875 Posts Drives: A metal box with a roundel Join Date: Jul 2007 Location: Portland, OR iTrader: (2)	Calling out ALL forum members who's running COMPLETELY catless.... I just want to try and isolate the issues/codes I'm seeing. P0300 Random/Multiple Cylinder Misfire Detected P0302 Cylinder 2 Misfire Detected P0303 Cylinder 3 Misfire Detected P2096 Post Catalyst Fuel Trim Bank 1 System Too Lean Has anyone thrown those codes once going completely catless?? If was suggested by another member that running catless DPs was my problem. But I'm not completely catless, still have the OEM exhaust. I just want to see if other members can verify that as well............ TIA __________________ '08 AW E90 335i PROcede V5 \| BMS DCI \| RR DPs \| ETS FMIC \| FORGE DVs \| Stett CP \| Vanguard \| PSS10
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07-11-2009, 11:58 AM	#3
Xander I'm new 8 Rep 255 Posts Drives: 997 Turbo, F80 M3, CC & Yukon Join Date: Jan 2009 Location: Buffalo, NY iTrader: (4)	Did you hook up your O2 sims (the wrong way maybe)?
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07-11-2009, 12:34 PM	#4
JayKay335i Banned 189 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	You shouldn't be misfiring from going catless.
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07-11-2009, 12:41 PM	#5
riceygts Second Lieutenant 25 Rep 264 Posts Drives: 09 N54 6MT Join Date: Apr 2007 Location: Irvine, CA iTrader: (1)	I didn't have those codes when going completely catless.
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07-11-2009, 01:19 PM	#6
jpsimon Team Zissou 3064 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I'm completely catless and haven't seen those codes
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07-11-2009, 01:32 PM	#7
thread killer Banned 14 Rep 472 Posts Drives: faster then your car Join Date: Nov 2008 Location: pulling away iTrader: (3)	your running lean on bank1. whats odd is its saying POST cat o2 is too lean. fuel trim is calculated off of PRE cat o2 sensors. POST cats are just for efficiancy monitoring of the cats. bad injector. this could be an injector spraying too much or too little. too much, and it sees the BANK running rich, and will trim all 3 down to figgure out WTF is going on. too little, and it will try to increase all 3 trying to figgure out WTF is going on, but will notice that fueling more causes more fuel, thus trims back down again. make sense? bad gas. bad tune.
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07-11-2009, 01:35 PM	#8
ar design 295 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	That has nothing to do with running catless. Tune/gas issue probably. __________________ -Critter
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07-11-2009, 03:11 PM	#10
Proper Motion LLC Custom Powder Coater 147 Rep 2,784 Posts Drives: White 335i Sedan Join Date: Dec 2008 Location: Orange County CA iTrader: (2)	I thought this was gonna be a Pro Green Earth thread __________________ www.propermotion714.com
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07-12-2009, 04:35 PM	#16
hun77777 Brigadier General 197 Rep 4,647 Posts Drives: SG E92 Join Date: Nov 2007 Location: Seattle WA iTrader: (58)	i would go dig up on bad gas -> spark plugs -> injectors and coils, rather than cat... i had some code on o2 sensors and misfires but it stopped when i put new spark plugs... __________________ SGE92TT......................... 12.331 Sec @ 117.89 Mph............................POWERED BY l BMS DCI l HELIX IC l FORGE DVs l RR OCC & CP & SCOOPS l AR 3" DPs l AE QUADs l BLISTEIN PSS10 l P3 VENT GUAGE l VISHNU PROCEDE V5 AUTOTUNE l Lots of Window Stickers
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07-12-2009, 04:36 PM	#17
lpphreakx06 Professional Moose Racer 316 Rep 7,509 Posts Drives: SG 335i E92 RIP + 2015 SS M3 Join Date: Jul 2008 Location: Bellevue, Wa iTrader: (25)	hmm He recently changed them out iirc __________________ Visit my blog anytime: http://www.sfpayments.com BMW Dream Team PNW Chapter, member #1 \|HP Autowerks \| AR DESIGN \| BMW PERFORMANCE \| STOP TECH \| Volk Racing\| AMS \| ARKYM
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07-12-2009, 04:51 PM	#18
OpenFlash 1736 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Sounds like one of the o2 sensors was damaged during the dp install.
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