Wondering if the distance between the turbo and wideband or o2 sensor is crucial??? What I really mean is how far should the o2 sensor be from the turbo on the dump pipe???
Time to get it going again.....
Generally the rule is 18 inches away from the exhaust port, but always after the turbo.
I'd always thought about 4 inch's away...............would having it so close to the turbo make the computer think its running lean because of the temp being so high that the computer would make the injectors dump more fuel?????
Time to get it going again.....
Diesell wrote:I'd always thought about 4 inch's away...............would having it so close to the turbo make the computer think its running lean because of the temp being so high that the computer would make the injectors dump more fuel?????
No, it doesn't quite work like that. Mine is about a foot after the turbo outlet on my down-pipe for reference.
as long as its heated it shouldnt matter ( within reason), ive seen OE's install both in the converter. As in having both bungs weld into the converter body before and after the catalyst material.
Well the 95 stock o2 sensors are single wire and there is only one. But I've turbocharged the motor and welded the o2 bung about 4 inch's away from the turbine housing and I believe that it may be too close...only reason being is that when I measured the voltage at the o2 sensor, I measured . 2 V and when I checked my spark plugs, they are black...but not wet and I'm currently (for troubleshooting purposes only) using the stock fuel injectors. My egt's are right where they should be about 900 deg's at idle...so I'm think that my o2 sensor may be too close and heating up too much and tell the motor to over fuel and cause the injectors to dump more fuel to raise the voltage at the o2 sensor............
Time to get it going again.....
The exhaust temp should not affect the o2 sensor readings. 4 inches away does seem a little close, but I wouldn't worry about it too much. If they start burning up, move it down a few more inches.
we reccomend 18 inches from the outlet of the turbo at no more than a 10 degree angle on our afx.
Jason
technically,it should be 10 times the diameter of exhaust pipe so 3'' be like 30'' away for w/b at 10 or 2 oclock pos.
If you have a aem uego 4" away from the turbine say good bye to the sensor. They hate heat.
SLO CAV (autocrossing dude) wrote:
Quote:
If you have a aem uego 4" away from the turbine say good bye to the sensor. They hate heat.
Being the fact that o2 sensors or widebands hate that kind of heat then a proper o2 placementand distance is required, which is my question...what would be the optimal distance from the turbine housing for an o2 sensor. I see a few people posting but no real confirming facts.
Time to get it going again.....
Diesell wrote:SLO CAV (autocrossing dude) wrote:
Quote:
If you have a aem uego 4" away from the turbine say good bye to the sensor. They hate heat.
Being the fact that o2 sensors or widebands hate that kind of heat then a proper o2 placementand distance is required, which is my question...what would be the optimal distance from the turbine housing for an o2 sensor. I see a few people posting but no real confirming facts.
It is not rocket science. About a foot or two after the turbo outlet is where most have theirs. It can be further than that, but response will be maybe a little bit slower.
Here is something interesting: for remote mount turbos, the wideband should still be after the turbo, and they are still accurate. They can be a long ways down, it really is not a big concern.
As long as they don't burn up, it is a good location.
I'm na on my ecotec and I have my aem uego about 6 inches before the cat. On a boosted car it would work fine that far as well. Go on your widebands manufacturers web site and get a owner manual they all have that info available for download.
