I Read to much into it lol Siri on my iPhone likes to change words without asking! I thought you were poking fun at the topic of my post not necessarily at the spelling or wording itself.


Anyway, I'm thinking of a fouled plug or weak plug?

 

Interesting. If I ever get an iPhone and tell it to "synch" with my computer, it will end up jumping into the lake (in order to "sink") with my PC. Good to know.

In any event, I, for one, do not suspect a plug. When a plug fails to fire, what ends up in the exhaust has extra O2, not too little.

 

It doesn't register unburnt fuel?

I would call boost leak but my afr are still good. Unless the last guy was running higher afr at wot which I don't believe.

I thought o2 sensor front ! But my afr cruising are 14.6 -15.3 that's pretty tight for a failing 02 correct?

 

Il just post a video lol

 

Nope. As crazy as this may seem, an O2 sensor measures ... wait for it ... oxygen.

 

You sir.... I like haha! As crazy as it may sound I do understand part air/ part fuel gauges. Lol

Anyway enough writing here are vids

Cruise vid

https://www.youtube.com/watch?v=yReDFl7Cat4

Idle vid

https://www.youtube.com/watch?v=U-gJH5gVCHw

 

Definitely where I was going with that one but if downshifting/coasting to a stop makes no difference to the OP I'm not too sure. From my experience with widebands, which isn't overly too much, deceleration/coasting fuel cut should read max lean or blank out (depending on the wideband) - I'm not sure there should be any significant amount of fuel remaining in the exhaust... Digital widebands can fluctuate quite a bit too, maybe its just slow to read?

On the topic of o2 sensors and larger exhaust volumes, makes me wonder about the efficiency of the exhaust setup (if any exhaust mods done)?

I'll peep the video clips later, maybe and see what they're describing, phone battery declared pooching level.

 

Stock DP then tsudo v2 3" back. Has test pipe

 

Ah! So did you delete the second O2 sensor and put the wide-band's sensor all the way back where the second O2 sensor normally would be located? If so, move the wide-band's sensor to a second (new) bung in the downpipe.

 

OP, What wideband do you have?

 

+1 There's potential for inaccurate AFR readings if he has the wideband located further down the exhaust stream

 

Yes I did :/ as per this website lol. I even asked if it ok lol. It came with a bung so ill fix that.
Do you guys think the afr are close at all?

 

Also, my AEM is in the cigarette lighter fuse. I don't like this bc it try's to calibrate while the car is running. The ignition fuse made the gauge stay on. What other fuse is constant once key is turned that doesn't reset with engine start?

 

Yes, you must move your wide-band's sensor to the down-pipe.

There's a source for switched 12V in the fuse-box to the left of your feet. Pull up the FSM (it's in various places on the web) and look at the wiring diagrams.

 

Noted thanks