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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 06-15-2008, 09:30 PM   #61
Minnoe07
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No, just use it for the secondary O2 sensors. So you only need 2. Still no CEL. to non-foulers!
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Old 06-17-2008, 07:15 AM   #62
tblue3cibm
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Sorry for the noob question but........Do i need two foulers (one long and one short) or four (two long and two short)?
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Old 06-17-2008, 09:23 AM   #63
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Quote:
Originally Posted by n2Bimmer View Post
so since there is 4 in total do you use one plug for each hole on the heades??
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no you only put them on the last two O2 sensors
this was the second post before you^^^^^

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Sorry for the noob question but........Do i need two foulers (one long and one short) or four (two long and two short)?
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Old 06-17-2008, 10:32 AM   #64
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how were you guys able to fit the non foulers mine had to no room even for only one, how did you guys do it, i had a muffler shop do it.
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Old 06-17-2008, 10:47 AM   #65
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How many of each do we need? Just make this very clear haha
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Old 06-17-2008, 10:59 AM   #66
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you need two for each header, only for the bottom ones, but they dont fit, how did you guys get it to fit, my SES light came on.
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Old 06-17-2008, 11:20 AM   #67
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Did you drill them?
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Old 06-17-2008, 11:24 AM   #68
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drilling them only makes the holes bigger, it doesnt shorten the non fouler, yes i did that too, it doesnt fit,
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Old 06-17-2008, 03:54 PM   #69
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anyone??
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Old 06-17-2008, 03:59 PM   #70
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with the ebay headers its practically impossible to fit these non foulers..... BUT what people have done was take it to an exhaust shop and make new bung holes on the mid pipe and place the 02 sensors w/ non foulers there.
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Old 06-17-2008, 04:35 PM   #71
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with the ebay headers its practically impossible to fit these non foulers..... BUT what people have done was take it to an exhaust shop and make new bung holes on the mid pipe and place the 02 sensors w/ non foulers there.
thats what i was thinking, so this will remove the SES,
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Old 06-17-2008, 04:50 PM   #72
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You can only use the longs ones, not the combo of both.
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Z4 Finned Diff Cover; Headers; M-Tech II Rear Bumper and CF Diffusor; CF Trunk; CSL Front Bumper
M3 CF Hood; DICE I-Pod Kit; JTD Rear Shock Mounts; UUC Front Strut Bar; O2 Simulators
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Old 06-17-2008, 05:31 PM   #73
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dam dont tell me i gotta go back and pay the guy to reweld the non foulers at a diff location for the sensors. ??
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Old 06-17-2008, 05:51 PM   #74
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I have ebay headers I was able to fit them....its a very tight fit but its do-able. You just need to take your time on it and don't worry if it touches your transmissions its not going to move so it won't break.
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Old 06-17-2008, 06:00 PM   #75
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ah really my muffler guy said you cant and also it wouldnt even screw on. we tried it but no go,
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Old 06-17-2008, 10:42 PM   #76
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It works, this is what you have to do...put one fouler on the o2 and the other on the header and then screw it in. It may touch the tranny but thats fine.
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Old 06-18-2008, 06:14 PM   #77
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crap, there was no space at all, it wouldnt even screw in properly.
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Old 07-22-2008, 08:12 PM   #78
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Great write up BTW!!!!

I just picked up my car today after the header install!!

Running great! ** knock on wood** A lot more power and response.
--- NO CEL drove it a bunch around town and what not today.

I bought the header for 330xi from boombop on ebay. So far so good.


Talked to the mechanic for about 30 min when i picked up the car.
HIS THOUGHTS:
"That was a royal pain the Hester". aka A$$.

8 hr job quoted. And it really took them like 10 hrs. FYI they didn't take off the bottom sub-frame. They apparently had enough room to do it while on the lift.
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Old 07-23-2008, 12:13 AM   #79
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quick question...planning on doing this to my beater accord but...

in essence, seems like this diy is basically pulling the o2 sensor out of the main stream of exhaust, so it doesn't "see" the fumes as much...but if such a simple fix overcomes a lot of these CEL errors...what's there to say that putting something over the o2 sensor won't accomplish the same or similar effect? for example (just grabbing some ideas out of the blue)...what if i pulled out the o2 sensor and placed a metal cap or lid over the o2 sensor, and plugged it back in? perhaps poke a few holes in the metal cap so that it's not TOO restricting...would something like this do the trick as well?

i haven't pulled my o2 sensor out yet, and have never even seen one in real life - all i know about o2 sensors are from what i've seen online. so forgive me if i'm missing something obvious. i'm more than willing to try this non-fouler diy but wanted to throw this out there before trying it.
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Old 07-23-2008, 10:21 AM   #80
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my guy finished up in 3 hours.
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