Want downpipes without a christmas tree dash

RRGOO7 · 12-08-2007, 07:20 PM

Im trying to replicate this exhaust
http://www.e90post.com/forums/showthread.php?t=76713

I really like the tone of the exhaust but saw that he is running downpipes....Is there anything i can do to not get CEL's and limp modes with downpipes? I want to power and sound but dont want the hassle of a check engine light

What can i do?

Terry335 · 12-08-2007, 07:21 PM

Yes, I make o2 simms that solve the CEL/SES problem with catless downpipes. They cost around $120 and will start shipping in two weeks.

OpenFlash · 12-08-2007, 07:25 PM

Quote:

Originally Posted by RRGOO7

Im trying to replicate this exhaust
http://www.e90post.com/forums/showthread.php?t=76713

I really like the tone of the exhaust but saw that he is running downpipes....Is there anything i can do to not get CEL's and limp modes with downpipes? I want to power and sound but dont want the hassle of a check engine light

What can i do?

Run a PROcede and use the built-in o2 simulator output. It's free. Should have the parameters set up soon.

Shiv

down4it · 12-08-2007, 07:25 PM

My dp's dont throw cels, i have extended o2 bungs...

Terry335 · 12-08-2007, 07:32 PM

Quote:

Originally Posted by down4it

My dp's dont throw cels, i have extended o2 bungs...

Some cars don't throw the code for some reason. Charlie (CEA3) doesn't throw them either, but I didn't get 10 miles away before I got the xmas tree dash. It might have to do with the ECU version.

RRGOO7 · 12-08-2007, 07:33 PM

Quote:

Originally Posted by down4it

My dp's dont throw cels, i have extended o2 bungs...

sent you a PM earlier.. did u get it?

down4it · 12-08-2007, 07:45 PM

Quote:

Originally Posted by RRGOO7

sent you a PM earlier.. did u get it?

Sorry i missed it, replied...

RRGOO7 · 12-08-2007, 07:48 PM

Quote:

Originally Posted by down4it

My dp's dont throw cels, i have extended o2 bungs...

what is this?

down4it · 12-08-2007, 08:39 PM

Quote:

Originally Posted by RRGOO7

what is this?

O2 bungs are the holes that your o2 sensors plug into on the Downpipe, there are 2 bungs in each Downpipe. My o2 bungs are extended out away from the pipe so that the o2 sensor doesnt sit inside the pipe but 2" out of the pipe so that it tricks the cpu into thinking that there are cats i guess...

RRGOO7 · 12-08-2007, 08:40 PM

Quote:

Originally Posted by down4it

O2 bungs are the holes that your o2 sensors plug into on the Downpipe, there are 2 bungs in each Downpipe. My o2 bungs are extended out away from the pipe so that the o2 sensor doesnt sit inside the pipe but 2" out of the pipe so that it tricks the cpu into thinking that there are cats i guess...

lol sent u another PM

A418t81 · 12-08-2007, 08:41 PM

Does anyone know if the RR downpipes are still legit or what? I haven't seen or heard a peep out of those guys in weeks.

M&M · 12-09-2007, 04:42 AM

Quote:

Originally Posted by shiv@vishnu

Run a PROcede and use the built-in o2 simulator output. It's free. Should have the parameters set up soon.

Shiv

Cool. Are there extra wires required to intercept?

itsbrokeagain · 12-09-2007, 09:32 AM

i wonder since mine is an early car, I can get away with using　extended O2 bungs to solve the problem...

Sniz · 12-09-2007, 09:57 AM

Quote:

Originally Posted by M&M

Cool. Are there extra wires required to intercept?

I would assume so?

e90AW335i · 12-09-2007, 03:12 PM

Quote:

Originally Posted by shiv@vishnu

Run a PROcede and use the built-in o2 simulator output. It's free. Should have the parameters set up soon.

Shiv

So in other words....Its free if you have the PROcede....(not quite free)

OpenFlash · 12-10-2007, 01:17 AM

Quote:

Originally Posted by M&M

Cool. Are there extra wires required to intercept?

Yep. You'll need a "Y" shaped wire coming out of the PROcede with the ends going into two ECU slots (for rear o2 sensors). The PROcede already has an o2 sensor simulation output. All I have to do is program the output. Basic waveform but needs to be acceptable frequency and amplitude to keep the ECU happy in a catless environment.

Shiv

335iheLLraiseR · 12-10-2007, 03:10 AM

Quote:

Originally Posted by shiv@vishnu

Yep. You'll need a "Y" shaped wire coming out of the PROcede with the ends going into two ECU slots (for rear o2 sensors). The PROcede already has an o2 sensor simulation output. All I have to do is program the output. Basic waveform but needs to be acceptable frequency and amplitude to keep the ECU happy in a catless environment.

Shiv

Possible inclusion into 2.03?

OpenFlash · 12-10-2007, 03:19 AM

Quote:

Originally Posted by 335iheLLraiseR

Possible inclusion into 2.03?

Absolutely.

shiv

baltik · 12-10-2007, 01:24 PM

Quote:

Originally Posted by itsbrokeagain

i wonder since mine is an early car, I can get away with using　extended O2 bungs to solve the problem...

I don't think it's a function of the car's build but the progman version you are running, so as soon as you upgrade the lights will go off, since the benefits of upgrading outweigh the downside of BMW fixing 02 monitoring in later versions - a terry/shiv fix with new progman would be ideal

scottp999 · 12-10-2007, 01:28 PM

Or if you want run downpipes with hi-flow cats. I still don't want to break my states laws, because my use is on-road as opposed to where it would be legal off-road.

Terry335 · 12-10-2007, 04:06 PM

Quote:

Originally Posted by scottp999

Or if you want run downpipes with hi-flow cats. I still don't want to break my states laws, because my use is on-road as opposed to where it would be legal off-road.

High flow cats are illegal too, FWIW. As is removing your secondary cats.

12-08-2007, 07:20 PM	#1
RRGOO7 Colonel 376 Rep 2,451 Posts Drives: GTR Join Date: Dec 2006 Location: Miami FL iTrader: (13)	Want downpipes without a christmas tree dash Im trying to replicate this exhaust http://www.e90post.com/forums/showthread.php?t=76713 I really like the tone of the exhaust but saw that he is running downpipes....Is there anything i can do to not get CEL's and limp modes with downpipes? I want to power and sound but dont want the hassle of a check engine light What can i do?
	Appreciate 0 Tweet Quote

12-08-2007, 07:21 PM	#2
Terry335 Banned 104 Rep 2,587 Posts Drives: 335i Join Date: Jan 2007 Location: Socal iTrader: (0)	Yes, I make o2 simms that solve the CEL/SES problem with catless downpipes. They cost around $120 and will start shipping in two weeks.
	Appreciate 0 Quote

12-08-2007, 07:25 PM	#4
down4it Banned 64 Rep 1,743 Posts Drives: E92 335i Join Date: Jul 2007 Location: SoCal iTrader: (3)	My dp's dont throw cels, i have extended o2 bungs...
	Appreciate 0 Quote

12-08-2007, 08:41 PM	#11
A418t81 Lieutenant Colonel 379 Rep 1,535 Posts Drives: Ever changing fleet Join Date: May 2007 Location: Alabama iTrader: (1) Garage List 2013 335is [0.00]	Does anyone know if the RR downpipes are still legit or what? I haven't seen or heard a peep out of those guys in weeks. __________________ 23 IOMG G80 CX, 23 iX M60, 24 GT3RS PTS Weissach, 24 RS E-tron GT
	Appreciate 0 Quote

12-09-2007, 09:32 AM	#13
itsbrokeagain 311 Rep 15,745 Posts Drives: 1999 528iT, E53 X5, E46 325xi Join Date: Mar 2007 Location: Strong Island iTrader: (7)	i wonder since mine is an early car, I can get away with using　extended O2 bungs to solve the problem...
	Appreciate 0 Quote

12-10-2007, 01:28 PM	#20
scottp999 Brigadier General 136 Rep 4,764 Posts Drives: 4runner SR5 Join Date: Mar 2007 Location: MD iTrader: (2) Garage List 2007 BMW 335 [9.00]	Or if you want run downpipes with hi-flow cats. I still don't want to break my states laws, because my use is on-road as opposed to where it would be legal off-road.
	Appreciate 0 Quote