N55 downpipe

[JeremyN55]

I have a 2012 135i and I just bought a catless downpipe, I know its gonna throw a code but will it put my car in limp/safe mode? They dont make anything for my car yet that will keep the code off besides the JB4.

[Suds]

Here's my DP, now I'm waiting on Cobb stage 2.

[JeremyN55]

Nice..i bought the AFE

[Tiago@VRSF]

We have quite a few in stock if you're looking for a great deal on a 3.5" 304 grade stainless steel downpipe

http://www.vr-speed.com/vrsf-3-5-sta...-bmw-135i.html

[bdoooh]

Originally Posted by Tiago@VRSF

We have quite a few in stock if you're looking for a great deal on a 3.5" 304 grade stainless steel downpipe

http://www.vr-speed.com/vrsf-3-5-sta...-bmw-135i.html

That is in fact quite a deal.. Very very tempting.

[TooFast4Radar]

Originally Posted by Tiago@VRSF

We have quite a few in stock if you're looking for a great deal on a 3.5" 304 grade stainless steel downpipe

http://www.vr-speed.com/vrsf-3-5-sta...-bmw-135i.html

What gauge of stainless are you using on the downpipe?

I'm new to the BMW crowd, does anyone make a downpipe and mid-pipe that is just a single shot and doesn't split? That seems like it would just be less work and more efficient on the N55.

[I35it]

You guys all suck at answering the OP's questions about it throwing a code!

[Tiago@VRSF]

It will throw a code since it's catless but it will not put the car in limp mode. If you use a JB4/Procede/Cobb it will remove the code.

[Focusedintntions]

The BGM can tool also clears the code and is much cheaper than the getting a full tune. Even with a HFC the n55 will throw a code.

[alexmtl_135i]

Does the JB4 really have a DPfix for the N55?

[Vigilante375]

It will throw a code since it will be catless. A check engine light will appear and have a code for whatever about the 02 sensor. But there should be no reason why the car would go into limp mode, but I am still learning about BMW tech. I'm not sure if the JB4 has a feature to tune out the 02 sensor but that is another question maybe someone else can answer......I would think it could do it.

You could also go to a local tuner and let him tune the car but then that'll void your warranty.

[Tiago@VRSF]

A DP Fix and CAN clear are two different features. A DP Fix simulates the o2 sensors and allows you to pass inspection because it allows the car to follow through with OBD readiness whereas the CAN Clear feature in the Procede and JB4 only clear the code before they have a chance to pop up. Both options won't put the car into limp mode, but the can clear will not allow a car to pass inspection if they hookup an OBD scanner.

[crystaweizen]

there is a dp fix which simulates O2 voltage switching to fool the pcm. you can get the sim by itself or it comes in the JB4 tuner

[Tiago@VRSF]

The JB4 does not have a built in o2 sim. It has a built in code clearer. Do not confuse the two, they serve different purposes.

[loesch]

Also there is no DP fix for the OP's car, 2011 and up. I wish there was.

[fullboost]

Originally Posted by Tiago@VRSF

It will throw a code since it's catless but it will not put the car in limp mode. If you use a JB4/Procede/Cobb it will remove the code.

With the Cobb, if you clear the code won't it just come back next time you start the car or will it stay cleared?

[Tiago@VRSF]

Not sure for the N55, but I know the N54 you can enable it so it never throws the code all together. This will not pass OBD readiness though.