I installed a Megan downpipe and test pipe today. The Megan DP replaced my Buschur DP. The fit of everything was great. However, I'm concerned about the location of the wideband O2 bung location. Of the four ways to install the test pipe, this seemed to be the best one. But I don't like it. Where did everyone else put theirs?

 

Looks fine to me. I beleive that The recomndation to mount it between 9 and 3.. You are close enough.

 

9-10-11-12-1-2-3... This is more like 4.5... which is outside that range.

 

It is not optimal IMO, but that is exactly where mine is... one year later it has yet to get ripped off the car, but I'm waiting

 

I had mine that way as well, but I later took it off and screwed the o2 sensor into the bung on my cat-back pipe. I'm running a spark plug non fouler (CEL fix) with the o2 sensor, so for me it was extended really low.

 

You've got the test pipe clocked 180* off. As was previously mentioned, your at 4 o'clock whereas you should actually be at 10 o'clock. You don't want it down below 3 o'clock because of moisture accumulation.

 

Rotating it 180* would put it straight into the drive shaft. Could you show of picture of it in this configuration?

Wait... you said the DP was clocked 180* off. How can that be? There's only one way for the DP to be installed, right?

 

Same problem. I tried putting on the CEL fix but it hangs too low..

 

You're probably right but I can't climb under mine just now to look. If it were mine I'd try rotating it 180* anyway. If there is in fact interference then I'd just plug that bung and relocate a new one either on the test pipe or up on the DP between 10'oclock and 2 o'clock.

 

Unless I missed something but the Megan test pipe o2 bung location sucks, and there is not much you can do (rotation wise).

You have 2 choices if you dont have a bung on the cat-back pipe. Either have the o2 sensor sticking downward or have it hitting the driveshaft/under body.

Luckily for me my Tanabe cat-back has a bung welded that is basically leveled parallely to the under body/ground.

As of right now I ordered a new ebay resonated test pipe and will be puting on shortly. The Megan Racing test pipe currently installed I bought used and the flanges are warped causing a very noticable exhaust leak.

 

Thanks for pointing this out to me. I meant to say that your test pipe might be 180* off. I never should have sampled the pharmaceuticals in my youth.

 

Just PMed the OP with:

 

Another thing you can do is, on ebay there was this non fouler for sale that was angled. Sort of like an L . You can use that to angle the emmisions o2 sensor up.

I have that non fouler but didnt put it on the test pipe yet but instead its on the cat-back section. For some reason I cant get the plug off the bung on the test pipe. Seems like threads werent the same or the heat did something. I unscrewed it about half way but then the breaker bar broke. I was even using a pipe for more leverage. That thing is on there tight!

 

Sorry to bring up an old thread, but I just installed my megan test pipe and it definitely hit the drive shaft, so I had to install like autoxer did above.

My question is how can i prevent moisture accumulation in this spot, also why the hell would megan install the bung there?

If I do have to move it to my catback is that an ok spot? My catback does have a bung but it seems to me everyone installs there's in the test pipe or dp.

Any help would be appreciated.