Does bootmod3 stage 2 fix cel for downpipe?

Bimmertodd88 · 04-16-2018, 07:17 AM

Hello I have a 2014 bmw 335i M-sport running vrsf 5' hd core intercooler, catless downpipe, and chargepipe. I also have the bms cold air intake. I been running stage 2 and still have the check engine light saying my car is running rich. I'm trying to diagnose the issue but having a hard time. Car runs a wierd in comfort but with WOT runs like a dream I think.... anybody can help?

JaredG_F30 · 04-16-2018, 07:28 AM

bm3 removes the CEL for catless downpipe, but it won't allow you to pass emissions. Are you on stock tune now?

Bimmertodd88 · 04-16-2018, 07:34 AM

Quote:

Originally Posted by JaredG_F30

bm3 removes the CEL for catless downpipe, but it won't allow you to pass emissions. Are you on stock tune now?

No I'm still on stage 2 so I don't know what's going on. Damn that's weird

JaredG_F30 · 04-16-2018, 07:42 AM

Ah I missed that part. This means that your CEL is not due to the catless DP. Something else is going on. Did you run the diagnostic and log?

Quote:

Originally Posted by Bimmertodd88

No I'm still on stage 2 so I don't know what's going on. Damn that's weird

Bimmertodd88 · 04-16-2018, 07:49 AM

Quote:

Originally Posted by JaredG_F30

Ah I missed that part. This means that your CEL is not due to the catless DP. Something else is going on. Did you run the diagnostic and log?

Quote:

Originally Posted by Bimmertodd88

No I'm still on stage 2 so I don't know what's going on. Damn that's weird

I have logs yeah but for me to look at them and know what to actually look for is beyond me lol. I have some knowledge. The thing is when I'm stage 1 I don't get the running rich code I get the code for the catless downpipe saying it's inefficient. But stage 2 makes me tune rich.

Bimmertodd88 · 04-16-2018, 08:11 AM

Quote:

Originally Posted by Bimmertodd88

Quote:

Originally Posted by JaredG_F30

Ah I missed that part. This means that your CEL is not due to the catless DP. Something else is going on. Did you run the diagnostic and log?

Quote:

Originally Posted by Bimmertodd88

No I'm still on stage 2 so I don't know what's going on. Damn that's weird

I have logs yeah but for me to look at them and know what to actually look for is beyond me lol. I have some knowledge. The thing is when I'm stage 1 I don't get the running rich code I get the code for the catless downpipe saying it's inefficient. But stage 2 makes me tune rich.

Could be my air intake the bms is known for causing cel and doing weird stuff so I'm going to take it off

JaredG_F30 · 04-16-2018, 08:28 AM

What trouble codes did you pull?

deezeedee335 · 04-16-2018, 11:04 AM

Quote:

Originally Posted by Bimmertodd88

Could be my air intake the bms is known for causing cel and doing weird stuff so I'm going to take it off

I think it is a good possibility that it is your intake causing the problem.

Try putting your stock intake back and clear the code to see if it goes away.

Report back your findings.

Thanks

HKD126 · 04-16-2018, 03:17 PM

May be stupid, but make sure your O2 sensors aren’t swapped. Another thing to check for is leaks around the downpipe.

What fuel are you using? What version of the BM3 map are you using as well? Seems like there are a few EWG cars getting this issue with v6.

Bimmertodd88 · 04-16-2018, 03:19 PM

Quote:

Originally Posted by HKD126

May be stupid, but make sure your O2 sensors aren't swapped. Another thing to check for is leaks around the downpipe.

What fuel are you using? What version of the BM3 map are you using as well? Seems like there are a few EWG cars getting this issue with v6.

I will check that after I switch the intake as I'm at work at the moment. I'm running stage 2 93 octane and yes I'm ewg and running version 6. But I just got a custom tune and it's still there so I'm checking the air intake as the tuner told me people can lose up to 25whp on a dyno because of the intake

HKD126 · 04-16-2018, 03:39 PM

Quote:

Originally Posted by Bimmertodd88

I will check that after I switch the intake as I'm at work at the moment. I'm running stage 2 93 octane and yes I'm ewg and running version 6. But I just got a custom tune and it's still there so I'm checking the air intake as the tuner told me people can lose up to 25whp on a dyno because of the intake

Yeah, the BMS Intake is shit. Better off with stock intake and an AFE or KN filter.

Who did your custome tune?

Bimmertodd88 · 04-16-2018, 03:43 PM

Quote:

Originally Posted by HKD126

Quote:

Originally Posted by Bimmertodd88

I will check that after I switch the intake as I'm at work at the moment. I'm running stage 2 93 octane and yes I'm ewg and running version 6. But I just got a custom tune and it's still there so I'm checking the air intake as the tuner told me people can lose up to 25whp on a dyno because of the intake

Yeah, the BMS Intake is shit. Better off with stock intake and an AFE or KN filter.

Who did your custome tune?

Bimmer performance center

Bimmertodd88 · 04-16-2018, 07:59 PM

So I fixed my issue from what it seems. I switched back to stock intake and cel hasn't come back on and not experiencing any weird stuff. Really gonna miss the intake sound

:

HKD126 · 04-16-2018, 10:11 PM

Just get a nice filter then enjoy the extra power and smoother running car. I too miss the woosh of the BMS Intake, but Jesus Christ did that thing only throw codes and made my car run like shit.

Bimmertodd88 · 04-16-2018, 10:18 PM

Quote:

Originally Posted by HKD126

Just get a nice filter then enjoy the extra power and smoother running car. I too miss the woosh of the BMS Intake, but Jesus Christ did that thing only throw codes and made my car run like shit.

Yeah I agree. Oh well I'll enjoy my car running good instead of sounding good

JaredG_F30 · 04-17-2018, 05:30 AM

Get a CTS turbo intake. Sounds awesome and no CEL.

Quote:

Originally Posted by Bimmertodd88

So I fixed my issue from what it seems. I switched back to stock intake and cel hasn't come back on and not experiencing any weird stuff. Really gonna miss the intake sound

:

Bimmertodd88 · 04-17-2018, 05:36 AM

Quote:

Originally Posted by JaredG_F30

Get a CTS turbo intake. Sounds awesome and no CEL.

Quote:

Originally Posted by Bimmertodd88

So I fixed my issue from what it seems. I switched back to stock intake and cel hasn't come back on and not experiencing any weird stuff. Really gonna miss the intake sound

:

Yeah I been looking into that one just I already bought this one and then have to fork out another 330 for the cts...

JaredG_F30 · 04-17-2018, 07:09 AM

Yeah that's kind of a punch in the nuts!

Quote:

Originally Posted by Bimmertodd88

Yeah I been looking into that one just I already bought this one and then have to fork out another 330 for the cts...

Bimmertodd88 · 04-17-2018, 07:16 AM

Quote:

Originally Posted by JaredG_F30

Yeah that's kind of a punch in the nuts!

Quote:

Originally Posted by Bimmertodd88

Yeah I been looking into that one just I already bought this one and then have to fork out another 330 for the cts...

Yeah maybe somewhere down the road. I or maybe I'll play with the bms and try to seal where I believe the fitment is trash which is where it slips into the boot and the maf sensor fitment has space and could be leaking there too. Ugh lol

sea_m2c · 04-17-2018, 10:49 AM

Good to know the BMS filter is shit....sorry for your troubles. Any idea if Injen is any good?

Bimmertodd88 · 04-17-2018, 10:51 AM

Quote:

Originally Posted by sea_m235i

Good to know the BMS filter is shit....sorry for your troubles. Any idea if Injen is any good?

Nah I don't. I have never heard of problems with the CTS just didn't want to spend 330 I got the bms from my coworker who didn't want his anymore after he just bought it and now I know why he didn't want it lol

Mike@N54Tuning.com · 04-17-2018, 01:13 PM

Quote:

Originally Posted by JaredG_F30

bm3 removes the CEL for catless downpipe, but it won't allow you to pass emissions.

+1

Mike

04-16-2018, 07:17 AM	#1
Bimmertodd88 Private First Class 53 Rep 180 Posts Drives: 2014 335i M-Sport Join Date: Mar 2018 Location: 33714 iTrader: (0)	Does bootmod3 stage 2 fix cel for downpipe? Hello I have a 2014 bmw 335i M-sport running vrsf 5' hd core intercooler, catless downpipe, and chargepipe. I also have the bms cold air intake. I been running stage 2 and still have the check engine light saying my car is running rich. I'm trying to diagnose the issue but having a hard time. Car runs a wierd in comfort but with WOT runs like a dream I think.... anybody can help?
	Appreciate 0 Tweet Quote

04-16-2018, 07:28 AM	#2
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	bm3 removes the CEL for catless downpipe, but it won't allow you to pass emissions. Are you on stock tune now? __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
	Appreciate 0 Quote

04-16-2018, 08:28 AM	#7
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	What trouble codes did you pull? __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
	Appreciate 0 Quote

04-16-2018, 03:17 PM	#9
HKD126 Captain 347 Rep 801 Posts Drives: 2014 335i, 2009 335xi Join Date: Jun 2016 Location: Wisconsin iTrader: (0)	May be stupid, but make sure your O2 sensors aren’t swapped. Another thing to check for is leaks around the downpipe. What fuel are you using? What version of the BM3 map are you using as well? Seems like there are a few EWG cars getting this issue with v6.
	Appreciate 0 Quote

04-16-2018, 07:59 PM	#13
Bimmertodd88 Private First Class 53 Rep 180 Posts Drives: 2014 335i M-Sport Join Date: Mar 2018 Location: 33714 iTrader: (0)	So I fixed my issue from what it seems. I switched back to stock intake and cel hasn't come back on and not experiencing any weird stuff. Really gonna miss the intake sound :
	Appreciate 0 Quote

04-16-2018, 10:11 PM	#14
HKD126 Captain 347 Rep 801 Posts Drives: 2014 335i, 2009 335xi Join Date: Jun 2016 Location: Wisconsin iTrader: (0)	Just get a nice filter then enjoy the extra power and smoother running car. I too miss the woosh of the BMS Intake, but Jesus Christ did that thing only throw codes and made my car run like shit.
	Appreciate 0 Quote

04-17-2018, 10:49 AM	#20
sea_m2c Private First Class 82 Rep 170 Posts Drives: 2019 M2C - 6MT Join Date: Oct 2017 Location: Seattle iTrader: (0)	Good to know the BMS filter is shit....sorry for your troubles. Any idea if Injen is any good? __________________ Current: 2019 M2 Comp, Coilovers, Camber Plates, Rogue SSK, AA Single MP, BM3 Stg 1 Sold: 2015 M235i RWD, MHD Stage 2, FBO, MPE, XHP, HPD5Evo \| IG @sea_m235i
	Appreciate 0 Quote