Challenge 3.5" catless downpipe + BMS Stage 1

Livfast335 · 06-08-2015, 08:47 AM

Hey guys,

For those of you who have experience, will I have CEL running this DP? I heard only the JB4 automatically clears these codes.

Also, will I see a performance/sound difference with my setup, or do I need to go JB4 to use this?

Thanks in advance!

G30 B58 · 06-08-2015, 09:13 AM

I recently installed a catless DP. Every 75-100 miles (or so it seems) your CEL will reappear if you clear it. I even tried a spark plug anti-fouler but the opening may be too large.

Yes, a JB4 will automatically clear your CEL.

Butt dyno, I think there's a small increase even w/o a tune. Sound, yeah, it's pretty awesome. Like others have said, it's a pretty well insulated cabin so roll down your windows for the full effect.

JB4 is not entirely necessary but w/o it you'll have the CEL and won't be able to fully utilize the freer flowing exhaust.

Livfast335 · 06-08-2015, 09:47 AM

I have the ability to clear CEL with my laptop, but obviously it will be easier using Jb4.

Any other way around this, I'm assuming a catless DP will for sure pull a CEL.

G30 B58 · 06-08-2015, 10:07 AM

BMS Stage 1 will NOT take care of your CEL.

Buckeyes · 06-08-2015, 10:52 AM

Quote:

Originally Posted by Livfast335

I have the ability to clear CEL with my laptop, but obviously it will be easier using Jb4.

Any other way around this, I'm assuming a catless DP will for sure pull a CEL.

Major pain in the ass to clear with a laptop every 75 miles or just live with the cel until you get a JB4. It's sounding like BMS is transitioning away from the canbus posi wire taps and moving towards obdii control.

Livfast335 · 06-08-2015, 10:53 AM

I can get the JB4, how much more difficult is it to install compared to Stage 1?

The stage 1 took 2 minutes.

Earthmaster · 06-08-2015, 12:17 PM

Grounding the wires if you don't have proper tools can be a pain. The f30 uses special T50 Torx which is annoying to find to get under the strut. Other than should only take 10 min if you know what your doing or less.

mike@x-ph.com · 06-08-2015, 12:26 PM

Quote:

Originally Posted by Livfast335

Hey guys,

For those of you who have experience, will I have CEL running this DP? I heard only the JB4 automatically clears these codes.

Also, will I see a performance/sound difference with my setup, or do I need to go JB4 to use this?

Thanks in advance!

Jb4 will automatically clear your code.
Catless DP will give your car a nice sound .
In terms of performance you will get a small performance gains. To take full advantage of the catless DP,you need a JB4.

Mike@N54Tuning.com · 06-08-2015, 01:56 PM

Quote:

Originally Posted by F32 N55

BMS Stage 1 will NOT take care of your CEL.

+1

Only the JB4 will clear the light!

IF you want to stick with the Stage1 you need something like the BMS CanFlap Module to get rid of the light.

Mike

Livfast335 · 06-08-2015, 09:10 PM

Quote:

Originally Posted by Mike@N54Tuning.com

+1

Only the JB4 will clear the light!

IF you want to stick with the Stage1 you need something like the BMS CanFlap Module to get rid of the light.

Mike

How about putting o2 spacers? A friend of mine mentioned it to me, in order to trick the system..

obriennathaniel · 06-09-2015, 01:09 AM

I hate to say it, but Challenge is the worst company in the world to buy something from. I had their High Flow Cat too, but my core melted, they said they would warranty it so i sent it off to them....4 months ago....and have yet to get any kind of compensation or even a reply to an email.

BUT, get a JB4 and be done with it. super super easy to install. takes me 5 minutes.

G30 B58 · 06-09-2015, 06:06 AM

Quote:

Originally Posted by Livfast335

How about putting o2 spacers? A friend of mine mentioned it to me, in order to trick the system..

My first attempt at that didn't work. I'll try a smaller opening sometime in the future but a JB4 is already in the works.

Mike@N54Tuning.com · 06-09-2015, 07:50 AM

Quote:

Originally Posted by Livfast335

How about putting o2 spacers? A friend of mine mentioned it to me, in order to trick the system..

They don't work. I think I read someone who tried them and they kinda worked but once they floored the car the light came on.

Mike

G30 B58 · 06-09-2015, 07:58 AM

Quote:

Originally Posted by Mike@N54Tuning.com

They don't work. I think I read someone who tried them and they kinda worked but once they floored the car the light came on.

Mike

My CEL lit up when I went to Eco-Pro mode for the cool down after a hard run in the twisties.

Jeff@TopGearSolutions · 06-10-2015, 02:14 PM

O2 spacers and defoulers typically don't work on this platform. It's hit or miss.

I'd sooner sell the BMS Stage 1 and get the JB4. Then you can unlock all the power and get rid of the CEL.

06-08-2015, 08:47 AM	#1
Livfast335 Lieutenant 175 Rep 514 Posts Drives: 2022 BMW M340 X-Drive Join Date: Feb 2015 Location: Montreal iTrader: (1)	Challenge 3.5" catless downpipe + BMS Stage 1 Hey guys, For those of you who have experience, will I have CEL running this DP? I heard only the JB4 automatically clears these codes. Also, will I see a performance/sound difference with my setup, or do I need to go JB4 to use this? Thanks in advance! __________________ 2022 BMW M340 X-Drive 2020 BMW X3 30i M-Package (retired) 2018 BMW 440i X-Drive Gran Coupe l Premium Enhanced Package l M-Performance Package + M-Performance Pack 2 (retired) 2013 BMW 335i X-Drive (retired)
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06-08-2015, 09:13 AM	#2
G30 B58 Pace Car Driver 1548 Rep 3,164 Posts Drives: '22 AW G30 B58 M-Sport Join Date: May 2014 Location: my garage in PA iTrader: (0)	I recently installed a catless DP. Every 75-100 miles (or so it seems) your CEL will reappear if you clear it. I even tried a spark plug anti-fouler but the opening may be too large. Yes, a JB4 will automatically clear your CEL. Butt dyno, I think there's a small increase even w/o a tune. Sound, yeah, it's pretty awesome. Like others have said, it's a pretty well insulated cabin so roll down your windows for the full effect. JB4 is not entirely necessary but w/o it you'll have the CEL and won't be able to fully utilize the freer flowing exhaust.
	Appreciate 0 Quote

06-08-2015, 09:47 AM	#3
Livfast335 Lieutenant 175 Rep 514 Posts Drives: 2022 BMW M340 X-Drive Join Date: Feb 2015 Location: Montreal iTrader: (1)	I have the ability to clear CEL with my laptop, but obviously it will be easier using Jb4. Any other way around this, I'm assuming a catless DP will for sure pull a CEL. __________________ 2022 BMW M340 X-Drive 2020 BMW X3 30i M-Package (retired) 2018 BMW 440i X-Drive Gran Coupe l Premium Enhanced Package l M-Performance Package + M-Performance Pack 2 (retired) 2013 BMW 335i X-Drive (retired)
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06-08-2015, 10:07 AM	#4
G30 B58 Pace Car Driver 1548 Rep 3,164 Posts Drives: '22 AW G30 B58 M-Sport Join Date: May 2014 Location: my garage in PA iTrader: (0)	BMS Stage 1 will NOT take care of your CEL.
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06-08-2015, 10:53 AM	#6
Livfast335 Lieutenant 175 Rep 514 Posts Drives: 2022 BMW M340 X-Drive Join Date: Feb 2015 Location: Montreal iTrader: (1)	I can get the JB4, how much more difficult is it to install compared to Stage 1? The stage 1 took 2 minutes. __________________ 2022 BMW M340 X-Drive 2020 BMW X3 30i M-Package (retired) 2018 BMW 440i X-Drive Gran Coupe l Premium Enhanced Package l M-Performance Package + M-Performance Pack 2 (retired) 2013 BMW 335i X-Drive (retired)
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06-08-2015, 12:17 PM	#7
Earthmaster Captain 127 Rep 851 Posts Drives: 15' M4 Austin Yellow Join Date: Sep 2014 Location: GTA iTrader: (3)	Grounding the wires if you don't have proper tools can be a pain. The f30 uses special T50 Torx which is annoying to find to get under the strut. Other than should only take 10 min if you know what your doing or less.
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06-09-2015, 01:09 AM	#11
obriennathaniel @obriennathaniel_f30 on Instagram 515 Rep 1,063 Posts Drives: 582whp/596wtq '13 335i Join Date: Jan 2014 Location: Houston,Tx ig:obriennathaniel_f30 iTrader: (0)	I hate to say it, but Challenge is the worst company in the world to buy something from. I had their High Flow Cat too, but my core melted, they said they would warranty it so i sent it off to them....4 months ago....and have yet to get any kind of compensation or even a reply to an email. BUT, get a JB4 and be done with it. super super easy to install. takes me 5 minutes. __________________ CG Precision VS-1 Exhaust\DR-1 DownPipe \| PS2 Turbo\Inlet \| PDU PI w/Fuel-it platinum kit & E sensor \| GFB DV+ Diverter Valve \| BM3 w/AIC2-V\|Tune CaryTheLabelGuy \| Full E85 \| ATM FMIC \| ER Chargepipe Inlet/Outlet \| AFE Intake \| BC Coilovers \| PSS 255/40-275/35 Velos Designwerks S3 two piece 19x9/19x10 \| Osram Xenarc \| LED retro \| AWRON digital AC gauge\|
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06-10-2015, 02:14 PM	#15
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	O2 spacers and defoulers typically don't work on this platform. It's hit or miss. I'd sooner sell the BMS Stage 1 and get the JB4. Then you can unlock all the power and get rid of the CEL.
	Appreciate 0 Quote