[Nixlimited]

Originally Posted by MidlifeCrisis

Good point. Now I'm wondering what the transit time from MAF to turbine outlet is, particularly with my FMIC plumbing in there. Sorry, Wolf, not trying to hijack the thread.

Yes, one of the many reasons for a blow-through set-up.

[donour]

The bosch sensor that comes with the LC-1 should last just as long as the factory 02 sensor if properly used (heated and with unleaded gas). 60-100k is the estimate of the manufacturer.

If you read the LC-1 manual Innovate claims that the controller samples fast enough to detect individual air pockets from combustion. In the downpipe, the exhaust gases have very high velocity. I have no trouble doing closed loop fuel trim at high boost and full throttle.

EDIT: also, if memory serves. Innovate does _not_ recommend putting the sensor close to the turbo (within 6-8"). Mine is at least 18" down stream -- although I didn't measure exactly how far.

EDIT2: although I believe that there is some kind of spacer available if you want to put the sensor in a very hot area.

d

[4banger]

WolfPlayer
What would you recommend for a PDE catted dp, where the cat is very close to the turbo? Is there a correction factor or an adjustment you can make if you put the sensor after the cat? Thanks.

Originally Posted by WolfPlayer

If you check my signature you will see that I have an APS exhaust with cat too Put it in the bung in the downpipe. You can see my wideband clearly in this pic on my site ...

http://www.bescaredracing.com/sti/wi...l/DSC04796.JPG

t

[donour]

Originally Posted by 4banger

WolfPlayer
What would you recommend for a PDE catted dp, where the cat is very close to the turbo? Is there a correction factor or an adjustment you can make if you put the sensor after the cat? Thanks.

The LC-1 (and I believe everything that uses the bosch 5wire sensor) directs the user to always install after the turbo and before the cats (if any). The manual has directions for how to build a heat sink in the case that the LC-1 is seeing exhaust temperature in excess of 800C.

People debate about whether putting it after the cat makes any difference. I discussed this with shiv at vishnu a while ago. On the evo, which has a single (located between the downpipe and the tip), a tip sensor reads about 0.5-1.0 points leaner on the same runs than another one located in the downpipe.

Which is 'accurate'. Well they are analog devices so both with be off to some degree. Understandably, shiv didn't want to be overly critical of either, he used both to for this particular job. If you ask me (although i you didn't ), on my own car I have installed and calibrated an LC-1 exactly as per the manufacturer's direction. I believe the numbers that you (or anybody) else would get there are pretty accurate. Draw what conclusions you will.

d

[TypeR_126]

Originally Posted by WolfPlayer

If you check my signature you will see that I have an APS exhaust with cat too Put it in the bung in the downpipe. You can see my wideband clearly in this pic on my site ...

http://www.bescaredracing.com/sti/wideband/innovate/install/DSC04796.JPG[IMG]chrome://targetalert/content/skin/new.png[/IMG]

t

Any problems with the sensor overheating?

[arco]

I'm thinking about tapping for a wideband on a mrt catted downpipe. so I understand that it is better to be further from the turbo but I think I have only about 4 or so inches away from the turbo. Does it matter what distance it is from the cat? If not, then the solution that I can think of is placing the wideband right before the cat. What do you think?

[WolfPlayer]

Holy 2 year old thread batman!

FWIW, my wideband is in my APS downpipe about 3 inches from the turbo ...
http://www.bescaredracing.com/sti/wi...l/DSC04482.JPG

I don't like this approach because it is very hard on the sensor itself. However, you do what you have to do ... and the bung was already there.

t