MasAyinde Posted February 21, 2013 Share Posted February 21, 2013 I got a DP with no WBO2 bung welded in and I'm taking it in this weekend the have the bung welded. It has a divorced wastegate, so I'm wondering how far down from the turbo side flange I should get the bung welded in so that I can get the best readings from a wideband. I know there's too much turbulence if it's too close and there's a greater difference in response times if it's too far, but I also don't know if there's a difference in how far it should be based on bellmouth vs divorced. Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted February 21, 2013 Moderators Share Posted February 21, 2013 I had one welded into an invidia DP here: http://i934.photobucket.com/albums/ad187/BarManBean/invidia%20dp/DSC_0011.jpg Seemed to be fine. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
MasAyinde Posted February 21, 2013 Author Share Posted February 21, 2013 Is that in the turbine only section or is that getting wastegate gasses also where it is? Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted February 21, 2013 Moderators Share Posted February 21, 2013 technically it's on the turbine side, but the divider on an invidia only goes back so far and the gasses should be mixing right after the divider ends. My pipe was catted, so there's honestly only so much room to play with. I seem to recall reading that you wanted it off to one side or the other for some reason, maybe to due with a bit of draft directly behind the divider. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
Spec B Posted February 21, 2013 Share Posted February 21, 2013 I too have the invidia (catless) - I opted to install it about 16" downstream of the turbo. Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted February 21, 2013 Moderators Share Posted February 21, 2013 Yeah, with the catless pipes that's certainly an option. "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
MasAyinde Posted February 21, 2013 Author Share Posted February 21, 2013 Well my cat is at the midpipe flange so I have a decent amount of room to play with and my divider goes about 3" back down the neck of the DP. I assumed that you only wanted the turbine gas factoring into the WBO2 reading. Link to comment Share on other sites More sharing options...
MasAyinde Posted February 21, 2013 Author Share Posted February 21, 2013 I too have the invidia (catless) - I opted to install it about 16" downstream of the turbo. [ATTACH]142604[/ATTACH] Have you noticed any problems with response times in the readings with it being that far? Link to comment Share on other sites More sharing options...
Spec B Posted February 21, 2013 Share Posted February 21, 2013 BTW - in it's current position I could easily remove the WB02 sensor from the engine bay. Link to comment Share on other sites More sharing options...
Spec B Posted February 21, 2013 Share Posted February 21, 2013 Have you noticed any problems with response times in the readings with it being that far? Not really - comparing the WB02 to the factory O2 sensor on my logs do not show any significant lag (while cruising). The lag time (if any) is not really a factor IMO. When dialing in your high end AFR, most tuners (including me) set a stable AFR target above 4,000 RPM, so the delay is not an issue since there is not a lot of rapid AFR change. Lag time does come into play at spool up - but I have not noticed any issues. Link to comment Share on other sites More sharing options...
Sicotic Posted February 22, 2013 Share Posted February 22, 2013 I have cnt catless, my bung is about 7 inches from turbo. Link to comment Share on other sites More sharing options...
robitrice Posted February 22, 2013 Share Posted February 22, 2013 i had my 02 bung welded about 7 inches from flange on my catless perrin and everything functioned well and readings were consistent Link to comment Share on other sites More sharing options...
MasAyinde Posted February 22, 2013 Author Share Posted February 22, 2013 I'm curious more about if it should be only on the turbine side of the divider and if not, how far past the divider so that turbulence (which I would assume gives weird readings) is minimized. Link to comment Share on other sites More sharing options...
Spec B Posted February 22, 2013 Share Posted February 22, 2013 Little more info here...if you have the room I suggest you place it past the divorced section (but before the cat) and on the side of the DP as shown in the diagram on the link. http://www.romraider.com/forum/viewtopic.php?f=15&t=2212&start=0 Link to comment Share on other sites More sharing options...
joeleodee Posted February 22, 2013 Share Posted February 22, 2013 Here's where mine is. No problems with delayed or funky readings. Link to comment Share on other sites More sharing options...
MasAyinde Posted February 22, 2013 Author Share Posted February 22, 2013 Do you have a divider in yours? Link to comment Share on other sites More sharing options...
robitrice Posted February 22, 2013 Share Posted February 22, 2013 I would put the bung in where the wastegate section and turbine part come together to ensure you are getting everything that comes through. they also suggest that the sensor not be put in from 3 - 9 o clock so so that moisture does not build up esp if it is pre cat or in a catless pipe. Link to comment Share on other sites More sharing options...
joeleodee Posted February 22, 2013 Share Posted February 22, 2013 Do you have a divider in yours? Yes. It is the invidia and it's catted. Link to comment Share on other sites More sharing options...
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