where to install wideband??

[2qik4u]

ok I have a 420a turbo and have 3" exhaust running out from under the car infront of the passengers side front tire. I have no cat or muffler and dont plan on running one any time soon. I just ordered an innovate lc-1 wideband and am having trouble finding the right info on where to install the sensor. my downpipe is vertical for about 20 inches before it turns horizontal to exit out the side of the car.where it turns vertical its only about 2 1/2 feet long before the end of the pipe. how close to the turbo should I run my wideband???? sorry i just realized I posted this in 4g63 forum after posting and going back to the forums page. oh well i can still get the right answer here. guess its not really a motor specific question.

 

[gofer]

The manufacturer say's 36" (3ft) from the turbo but from what I've read in your OP it doesn't seem like your exhaust is even that long? The closer to the turbo you run it the hotter the exhaust gases are which in turn will decrease the life of your WB sensor. On the upside though, the closer to the turbo also means more REAL TIME AFR changes are being displayed on your gauge.

 

[2qik4u]

ok so about 2 foot from the turbo my exhaust pipe doesnt get that hot. i know the air flowing through it is still really hot but I think the pipe gets about half as hot there as right after the turbo. anyone else got anything to say? Im not worried about the life of the sensor cause i can get replecement ones for under 50 dollars and i think that is a fair price to pay for good readings while it lasts.

 

[Imback]

Sensors failing cause of the high heat is just a myth. People have gone well over a year with no problems. There was even one guy going on 4 years or something to that extent. I would place it where ever it is easiest to access

 

[2qik4u]

well in that case it would be about 10 inches from the turbo. right before my 3 inch long flex section!!! i think I will mount it right after the turn though. thanks guys for the info.

 

[gofer]

Mount it BEFORE the flex section if you can, flex sections are prone to exhaust leaks and if your running a WB it will give you false AFR readings.

I agree with Imback, the manufacturer suggests 36" but many guys run they're WB o2 sensor in the front o2 sensor location which is right off the turbo and have had no problems at all.

 

[2qik4u]

thanks for the input guys. I guess im going to run it right after the turbo before my flex section. the flex section isnt very far from the turbo so not alot of choice if you say that the flex will throw off the a/f r. guess we will test the myth about how far away the sensor should be!! after a while of running it i will take a buddy of mines sensor and put it in place of mine for a few minutes and see if we come up with a different reading from his sensor that is in his rear o2 location with a cat delete to what my sensor says. trial and error is not something new to me anyways!

 

[Boomdeeze]

This may be a dumb question but it happens. If you run a WB o2, do you still need to run the stock o2 sensor for the ECU to read? Or can you just run the WB and just control the fuel by the AFPR?

 

[2qik4u]

if you do not have a stand alone controller for tuning then yes you still need to have an o2 signal going to your ecu.(as far as i can tell by reading for countless hours on site after site!) this can be done by keeping the stock sensor in place or by using an o2 simulator like the one I just bought from symtech labs. they seem easy to install from what ive read on this site and others. you need acess to an obd scanner though cause you will need to 'tune' the simulator. look up o2 simulator.

 

[Boomdeeze]

So if I have dsm link I should only need the WB?

 

[2qik4u]

you nee the wideband for the dsmlink but it is a piggyback and not full stand alone right??

 

[Boomdeeze]

Im pretty sure DSM link is a stand alone.

 

[Chaosweaver]

Im pretty sure DSM link is a stand alone.

DSMlink isn't a full standalone, it does have standalone features though. Its hard to explain and don't get it myself half the time.

 

[2qik4u]

your best bet is to keep your narrowband for your ecu to have something to see and put an extra bung in the system andrun a wb for your dsmlink.

 

[gofer]

This may be a dumb question but it happens. If you run a WB o2, do you still need to run the stock o2 sensor for the ECU to read? Or can you just run the WB and just control the fuel by the AFPR?

if you do not have a stand alone controller for tuning then yes you still need to have an o2 signal going to your ecu.(as far as i can tell by reading for countless hours on site after site!) this can be done by keeping the stock sensor in place or by using an o2 simulator like the one I just bought from symtech labs. they seem easy to install from what ive read on this site and others. you need acess to an obd scanner though cause you will need to 'tune' the simulator. look up o2 simulator.

your best bet is to keep your narrowband for your ecu to have something to see and put an extra bung in the system andrun a wb for your dsmlink.

With dsmlink V3 you can run ONLY a wideband o2 sensor, you just have to make a few changes to simulate your narrowband for closed loop operation.
I could type up a bunch of info on it or just let the experts over at dsmlink explain it for me. Whether or not you have dsmlink you'll still be able to view the link since its in their Wiki section. V3 Narrowband Sim

If you have any more questions I'll help you the best I can.

 

[2qik4u]

i guess the dsmlink question should have been a thread all in itself cause this thread was just about where to place a wideband.