[lonecitizenfour]

Hey guys,

Does installing an O2 sim and/or one of those defouler valves cause misreads to the ECU causing lean / rich conditions in the engine by any chance?

I always wanted to go Catless but swapping it for emissions check is a huge turn off every year

Current high-flow catted dp does not cause CEL

- Does the VSRF DP Fix work for N20 / N26 EWG?
- Does the AK74 (-K) work for N20 / N26 EWG?

[rjd_F30]

Originally Posted by lonecitizenfour

Hey guys,

Does installing an O2 sim and/or one of those defouler valves cause misreads to the ECU causing lean / rich conditions in the engine by any chance?

I always wanted to go Catless but swapping it for emissions check is a huge turn off every year

Current high-flow catted dp does not cause CEL

- Does the VSRF DP Fix work for N20 / N26 EWG?
- Does the AK74 (-K) work for N20 / N26 EWG?

Not sure what you mean by the last part of your post, but an O2 spacer is generally OK as long as you put it on the right O2 sensor. If not you can cause problems (I believe it goes on the one furthest down on the DP) by spacing the one that delivers data that is used to calculate AFRs, but if done right it should be fine.

But, it won't help with passing emissions. At least not if they put a thing in the exhaust tip to actually test the emissions like they do in NJ. What are you worried about this for if you already have a catted DP that isn't causing a CEL though?

[lonecitizenfour]

Originally Posted by rjdnyy224

Not sure what you mean by the last part of your post, but an O2 spacer is generally OK as long as you put it on the right O2 sensor. If not you can cause problems (I believe it goes on the one furthest down on the DP) by spacing the one that delivers data that is used to calculate AFRs, but if done right it should be fine.

But, it won't help with passing emissions. At least not if they put a thing in the exhaust tip to actually test the emissions like they do in NJ. What are you worried about this for if you already have a catted DP that isn't causing a CEL though?

Where I'm going is just OBD II Testing.

[rjd_F30]

Originally Posted by lonecitizenfour

Where I'm going is just OBD II Testing.

Gotcha. So why are you worried about an O2 spacer if you already have a catted DP with no CEL?

EDIT: cause you want to go to a catless DP. Missed that part of your post. My b!

[CandyRedRC46]

I have a catless downpipe, o2 spacer (spark plug defouler) and I am not tuned yet.
I do not have a steady CEL, but I have gotten a CEL twice so far in the last month that cleared itself on the next start.

[lonecitizenfour]

Originally Posted by CandyRedRC46

I have a catless downpipe, o2 spacer (spark plug defouler) and I am not tuned yet.
I do not have a steady CEL, but I have gotten a CEL twice so far in the last month that cleared itself on the next start.

Is this absolutely safe that it won't cause a lean condition?

[rjd_F30]

Originally Posted by lonecitizenfour

Is this absolutely safe that it won't cause a lean condition?

Read my first post. As long as you put it on the right O2 sensor it will be fine.

[lonecitizenfour]

Originally Posted by rjdnyy224

Read my first post. As long as you put it on the right O2 sensor it will be fine.

It'll be okay if I kept it installed?

[rjd_F30]

Originally Posted by lonecitizenfour

It'll be okay if I kept it installed?

As long as you put it on the right O2 sensor, yes.

[CandyRedRC46]

The o2 sensor closest to the cylinder head is the o2 sensor that your ecu relies on for tuning.

The o2 sensor furthest from the cylinder head is the o2 sensor that your ecu relies on to detect the catalytic converter.

[lonecitizenfour]

Originally Posted by CandyRedRC46

The o2 sensor closest to the cylinder head is the o2 sensor that your ecu relies on for tuning.

The o2 sensor furthest from the cylinder head is the o2 sensor that your ecu relies on to detect the catalytic converter.

Okay thanks. I'll ask if the shop can get this part from autozone or something and add it in... if not... there's always next time.

[lonecitizenfour]

Originally Posted by CandyRedRC46

The o2 sensor closest to the cylinder head is the o2 sensor that your ecu relies on for tuning.

The o2 sensor furthest from the cylinder head is the o2 sensor that your ecu relies on to detect the catalytic converter.

Dumb question... do you mind finding a pic of a n26 downpipe and circling or point to which hole to put the non fouler in?

Thanks

[perryo91]

Originally Posted by lonecitizenfour

Dumb question... do you mind finding a pic of a n26 downpipe and circling or point to which hole to put the non fouler in?

Thanks

Bro

[lonecitizenfour]

Originally Posted by perryo91

Bro

just trying to make sure XD!