I just bought a megan midpipe from a member on here yesterday. my question is do any of you guys have your O2 sensor in the midpipe. I was going to take it to work tonight and install a bung right behind the flange where s pipe bolts to the midpipe. It looks like there is enough room there. anyone have any input?

 

Im guessing you are putting another bung for a wideband right?

You could do it, but it wouldn't be as accurate as if you get it onto the S-pipe

 

your wide band should come with instructions that will state how far down the exhoust stream it should be placed. If im not mistaken the aem uego tells you to put it 6-8" down stream for n/a applications and 12" for boosted and/or wher race gas is used.

 

I don't think anyone has an 02 sennsor or wideband in the midpipe. To far down the exhaust path.

 

x2

 

it is right at the flange where the spipe and midpipe meet. like 6 inches down from the one that is in the spipe. Is that really too far away?

 

hmmm i suppose if the afrs were more optimal or something further down you could do that

 

Yes, to far

 

no its not too far. when you get tuned on a dyno, they put an O2 sensor in the end of your exhaust, and tune off that. your afr will stay the same through out the exhaust. the only foreseeable problem with having it that far back would be in the event you want to do an exhaust cutout, or have a major exhaust leak before the sensor.

 

you forgot that the o2 sensor needs to warm up in order to get an accurate reading, if its too far back it will take longer or never heat up to perfect opperating temps. Im not an expert but i dont think the 02's on a dyno are exactly the same. Im pretty sure that they are made specifically for the dyno. Maybe paul from dezod or Todd can chime in and clear things up a bit.

 

+1 I don't think an 02 at the dyno is the same as an 02 on the car.

 

an o2 is an o2

 

Meaning the way it operates. It's not quantum mechanics, there is a reason why no one puts an 02 sensor in the midpipe.

 

i guess i need to clarify this a little bit. my primary o2 is in my downpipe. my uego o2 is in the spipe. i was going to put the secondary o2 in the midpipe. i really didn't think it made a difference where i put the secondary one since I don't even have it hooked up at all right now

 

huh? in quantum mechanics there is reason to put something in a certain place

 

secondary o2 would only throw CEL

 

 

im just messing with you, like hell do i know anyhting about quantum mechanics. hahaha

 

in that case your not going to hurt anything really, so yeah put it wherever.

 

You and me both....lol. Hell, I have trouble just saying it.