so....wideband... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*DALAZ_68* · 12-17-2008, 09:15 PM

well i finally got my Uego widband gauge...

and heres my question on this...do i keep my stock o2 sensor and just wel the secondary bung to pipe...

im still on stock ecu but am going Nistune by the end of the year...so i need some imput...

i figure that i do need ot keep my original o2 sensor because its connected to my ecu...

or is there a way to connect the wideband to my stock ecu harness and get rid of the stock o2 and install only my wideband...

any help is greatly appreciated

tgd89 · 12-17-2008, 09:41 PM

The wideband sensor needs to be at least 18 inches from turbo/headers, that's what most manufacturers recommend.

So I would recommend welding a second bung and keeping the stock sensor for now as the voltage outputs of a narrow band sensor and wideband sensor are not the same.

*DALAZ_68* · 12-17-2008, 11:16 PM

Quote:

Originally Posted by tgd89

The wideband sensor needs to be at least 18 inches from turbo/headers, that's what most manufacturers recommend.

So I would recommend welding a second bung and keeping the stock sensor for now as the voltage outputs of a narrow band sensor and wideband sensor are not the same.

i was thinking something along those lines

i was also wondering whats the best metal to weld the bung provided by the Uego to the elbow

ChicagoS14 · 12-17-2008, 11:35 PM

If its any help, I run a test pipe on my S14 so I had the AEM bung welded by a muffler shop to my test pipe. so far its doing good. I also have a turbo on my KA and in the AEM manual from what I remember recommended 36 inches away from the hot side of the turbo. You dont want to too far, but too close will also mean that the 02 sensor will burn out quicker, also the incredible temps of the exhaust might cause some harm as well, so I wouldnt have it welded too close to the turbo on the downpipe either.

*DALAZ_68* · 12-17-2008, 11:49 PM

so 36'' fromt he hotside aye

and from what i remember it has to be on a top side correct..

so i looked at the wires black is ground red is power....

blue and white???

also whhere is is safe to run power from properly

singlecamslam · 12-18-2008, 12:14 AM

You can just weld another bung at a muffler shop on the downpipe or testpipe. Just make sure the sensor is not pointing completely down or up.

slw240sx · 12-18-2008, 12:18 AM

I run one about 6-8" from the turbo outlet, with a heat sink on it made from aluminum sheet metal.

i have another in the bottom of the down pipe right after it curves under the car.

the first location is accurate all the time, the one further down stream is slightly off at idle, but once you start pushing some exhaust gases it ends up reading the same as the first location.

i am running a AEM in first position and a innovate LC1 in secondary.

yes i know its dumb, but i bought a LC1 to use as a wideband for my megasquirt to run off of. then we started getting such good deals on AEM's that i wanted a gauge, but for the cost of the innovate unit i just bought the AEM. I didnt feel like removing the LC1 and pulling the dash apart to get to it.

tgd89 · 12-18-2008, 12:20 AM

The red wire should be wired to a switched 12v, and the black is ground. Now the white wire is the analog 0-5v output, and the blue wire is the serial(digital) output.

*DALAZ_68* · 12-18-2008, 12:26 AM

Quote:

Originally Posted by slw240sx

I run one about 6-8" from the turbo outlet, with a heat sink on it made from aluminum sheet metal.

i have another in the bottom of the down pipe right after it curves under the car.

the first location is accurate all the time, the one further down stream is slightly off at idle, but once you start pushing some exhaust gases it ends up reading the same as the first location.

i am running a AEM in first position and a innovate LC1 in secondary.

yes i know its dumb, but i bought a LC1 to use as a wideband for my megasquirt to run off of. then we started getting such good deals on AEM's that i wanted a gauge, but for the cost of the innovate unit i just bought the AEM. I didnt feel like removing the LC1 and pulling the dash apart to get to it.

yeah see im looking at my stock o2 and its location is on th estock elbow...i was thinkin buyin an aftermarket bung and having it welded a bit lower from the other bung for the stock o2 hole

slw240sx · 12-18-2008, 12:30 AM

Quote:

Originally Posted by DALAZ_68

yeah see im looking at my stock o2 and its location is on th estock elbow...i was thinkin buyin an aftermarket bung and having it welded a bit lower from the other bung for the stock o2 hole

I have ran mine there for a few months. its been fine. you can also get a O2 extender bung from innovate which allows you to run it closer. or i have even seen guys buy spark plug nonfoulers from autozone and drill it out and use it to space out O2s, but thats mostly for OBD2 tricks. you can probably get a shop to weld one in for you for under 40$. i know i have done a ton of them, i normally charge 35 for downpipes that are off. it only takes like 5mins to drill the hole out and weld it up.

*DALAZ_68* · 12-18-2008, 12:44 AM

Quote:

Originally Posted by slw240sx

I have ran mine there for a few months. its been fine. you can also get a O2 extender bung from innovate which allows you to run it closer. or i have even seen guys buy spark plug nonfoulers from autozone and drill it out and use it to space out O2s, but thats mostly for OBD2 tricks. you can probably get a shop to weld one in for you for under 40$. i know i have done a ton of them, i normally charge 35 for downpipes that are off. it only takes like 5mins to drill the hole out and weld it up.

well the one problem that i ran into is the stock elbow is cast IIRC

while the bung i think is alumn

so thats why i was thinking of just buying a new elbow have the bung welded on that

this would solve 2 issues

finish my aftermarket exhaust
get wideband on to properly adjust fuel

but this whole it to close ot the heat is worring me...and i still need help getting power to it...

usdm180sx · 12-18-2008, 01:28 AM

Steve, be sure to hook up the wideband after you get the car tuned. Running rich kills 02 sensors!

*DALAZ_68* · 12-18-2008, 01:30 AM

Quote:

Originally Posted by usdm180sx

Steve, be sure to hook up the wideband after you get the car tuned. Running rich kills 02 sensors!

well i just want to set the fuel pressur to the right amount via FPR and gauge

and use the Uego to make sure i dont lean out

should be safe

and i dont mind replacing the sensor slong as it reads fo rnow

12-17-2008, 09:15 PM	#1
DALAZ_68 The Cook Join Date: Apr 2007 Location: Los angeles Age: 23 Posts: 9,863 Trader Rating: (77)	so....wideband... well i finally got my Uego widband gauge... and heres my question on this...do i keep my stock o2 sensor and just wel the secondary bung to pipe... im still on stock ecu but am going Nistune by the end of the year...so i need some imput... i figure that i do need ot keep my original o2 sensor because its connected to my ecu... or is there a way to connect the wideband to my stock ecu harness and get rid of the stock o2 and install only my wideband... any help is greatly appreciated __________________ LOL 240... my seller review thread XBL GT : Wh0pp3r68

12-17-2008, 11:35 PM	#4
ChicagoS14 Zilvia Junkie Join Date: Aug 2004 Location: Chicago Age: 23 Posts: 387 Trader Rating: (1)	If its any help, I run a test pipe on my S14 so I had the AEM bung welded by a muffler shop to my test pipe. so far its doing good. I also have a turbo on my KA and in the AEM manual from what I remember recommended 36 inches away from the hot side of the turbo. You dont want to too far, but too close will also mean that the 02 sensor will burn out quicker, also the incredible temps of the exhaust might cause some harm as well, so I wouldnt have it welded too close to the turbo on the downpipe either. __________________ 95 240SX KA-T \| 89 SOHC 5spd Daily 90 SOHC auto partout - pm 4 parts

12-17-2008, 11:49 PM	#5
DALAZ_68 The Cook Join Date: Apr 2007 Location: Los angeles Age: 23 Posts: 9,863 Trader Rating: (77)	so 36'' fromt he hotside aye and from what i remember it has to be on a top side correct.. so i looked at the wires black is ground red is power.... blue and white??? also whhere is is safe to run power from properly __________________ LOL 240... my seller review thread XBL GT : Wh0pp3r68

12-18-2008, 12:14 AM	#6
singlecamslam Zilvia FREAK! Join Date: Apr 2008 Location: Norcal Posts: 1,092 Trader Rating: (5)	You can just weld another bung at a muffler shop on the downpipe or testpipe. Just make sure the sensor is not pointing completely down or up. __________________ WTB s13 side skirts.

12-18-2008, 12:18 AM	#7
slw240sx Zilvia.net Advertiser Join Date: Apr 2003 Location: Dayton Ohio Age: 28 Posts: 396 Trader Rating: (2)	I run one about 6-8" from the turbo outlet, with a heat sink on it made from aluminum sheet metal. i have another in the bottom of the down pipe right after it curves under the car. the first location is accurate all the time, the one further down stream is slightly off at idle, but once you start pushing some exhaust gases it ends up reading the same as the first location. i am running a AEM in first position and a innovate LC1 in secondary. yes i know its dumb, but i bought a LC1 to use as a wideband for my megasquirt to run off of. then we started getting such good deals on AEM's that i wanted a gauge, but for the cost of the innovate unit i just bought the AEM. I didnt feel like removing the LC1 and pulling the dash apart to get to it. __________________ ForcedFabllc.com

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12-17-2008, 09:41 PM	#2
tgd89 Leaky Injector Join Date: Oct 2005 Location: abq nm Posts: 64 Trader Rating: (0)	The wideband sensor needs to be at least 18 inches from turbo/headers, that's what most manufacturers recommend. So I would recommend welding a second bung and keeping the stock sensor for now as the voltage outputs of a narrow band sensor and wideband sensor are not the same.

12-18-2008, 12:20 AM	#8
tgd89 Leaky Injector Join Date: Oct 2005 Location: abq nm Posts: 64 Trader Rating: (0)	The red wire should be wired to a switched 12v, and the black is ground. Now the white wire is the analog 0-5v output, and the blue wire is the serial(digital) output.

12-18-2008, 01:28 AM	#12
usdm180sx Post Whore! Join Date: Dec 2005 Location: 562/310/626/323/213/818 Posts: 3,518 Trader Rating: (3) Rides Gallery: usdm180sx	Steve, be sure to hook up the wideband after you get the car tuned. Running rich kills 02 sensors! __________________ -Norm! http://i97.photobucket.com/albums/l2.../koukisig2.jpg

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