So, having successfully removed both 02 sensors, I am now contemplating gutting the pre cats in situ while the sensors are out.

I understand there is a noticeable power gain to be achieved.

 

I have read about using the threaded hole to soak the ceramic material with oil so as to prevent the dust from damaging the turbo seals.

 

Also, I was thinking of maybe rigging up an airline so as to run a constant flow of air from upstream, via the 02 threaded bore, this way I could make sure that the dust flowed away from the seals.

What's everyones thoughts?

 

Are there any additional precautions or tips that I may need to consider?

Thanks in advance.

So, having successfully removed both 02 sensors, I am now contemplating gutting the pre cats in situ while the sensors are out.

I understand there is a noticeable power gain to be achieved.

 

I have read about using the threaded hole to soak the ceramic material with oil so as to prevent the dust from damaging the turbo seals.

 

Also, I was thinking of maybe rigging up an airline so as to run a constant flow of air from upstream, via the 02 threaded bore, this way I could make sure that the dust flowed away from the seals.

What's everyones thoughts?

 

Are there any additional precautions or tips that I may need to consider?

Thanks in advance.

 

it should be possible to take the elbo,s off in the car...you can get the top 2 from the top and the bottom 2 fixings from the bottom. Then just change to a series 1 elbo.

Looking at it from the passenger side, I would say it is possible to remove the elbow, but the drivers side seems a bit restricted by the gearbox. May just be the way I am looking at it.

If I should get to remove them both, what options have I with regards to a better elbow such as the series one as you say?

It is possibe just fiddly and you eil need to remove the turbo heat sheilds,therearprotion at least. Ive done this job twice nowin situ and I wouldnt relish a third.

I mean its possibleto remove the elbow, tbh why dont you just fit some proper divorced downpipes etc.

I mean its possibleto remove the elbow, tbh why dont you just fit some proper divorced downpipes etc.

 

Totally agree there z32bolt.

It's just that I know very little about what to get and which ones will fit etc'.

I am forever buying little bits and bobs only to find they don't fit.

You can use the japspeed ones, may be a touch tight if its an auto mind. If you were closer id lend you a hand, whatever you decide, if those eblows are coming off bear in mind that those studs might be a hassle to remove, so ensure they are soaked in wd40 or simular in adv as nce of you trying to remove them. Also bear in mind the possibility of the decat showing the symptoms up of leak rear oil seals.

Cheers z32bolt.

I wish you lived closer also. I could do with some experienced help sometimes.

As you say, I should just swap the original elbows for something a little more effective.

I will have to give it some thought.

There just appears to be so much to remove before I can access the drivers side elbow from above.

Mind you, having said that, it will be the same dilemma if I go the route of gutting.

I will still have to clear stuff away to get to the sensor bore hole.

Decisions.. Decisions!!

Oh no, you dont have to do it from above, thats way worse. The bottom two you should be able to do easy with a ring spanner, the top up with a socket on a uj I believe.

Oh no, you dont have to do it from above, thats way worse. The bottom two you should be able to do easy with a ring spanner, the top up with a socket on a uj I believe.

 

Thanks again z32bolt. I will have a look from below at the week end, as you say, it will save a lot of hassle that way.

Just have to Tackle the dreaded claustrophobia! Lol

Help!!

Both 02 sensors turned up today, great news I thought. Question is, can I fit them randomly or is there a left hand and a right hand?

I am hoping that they are universal.

both the same m8

Cheers Mark!! It's off to the garage I go then.

OK, Fitted both new o2 sensors, put everything back together and fired her up!

Straight away I could see an instant difference. Both readings started off at around 30 (using data scan) and as the temperature rose so did both the o2 readings. I did not get quite up to full temp' but both o2 readings levelled out at 96.

At this point, when I revved the engine, both readings shot down to virtually zero and then retuned to 96.

Not a thorough check I grant you, but at least it suggests I now have 2 working o2 sensors.

From what I am now seeing, would you think that things are working correctly?

I did take a snapshot of the full display and would like to ask, should I be looking at other readings in conjunction with the o2 readings?

Edited March 19, 201312 yr by redwine300

:lol:Anyone?:lol:

Well, managed to keep my laptop powered up long enough to do a full engine temperature o2 test with Data Scan tonight.

Brilliant results even if I do say so myself. :dance:

Holding the rpm at 2000, both o2 readings smoothly fluctuated between 10 and 95 on the display. :dance:

 

I could also watch the RICH / LEAN indicator at the bottom of the display alternate.

 

I counted the flashes, (that were in sync with the dials) to be about 5 times per 10 seconds! spot on or what!! :yes:

 

This bit may be my imagination, but I think she even sounded healthier when revving a her few times. :biggrin:

 

ps As my earlier post, I would still like to know what other readings may be worth looking at.

For example, what should my Base AF be reading? etc'

I know! Me again. :lol:

 

Now that I am happy that my o2 sensors are working, I decided to re check my emissions.

Great results!! :dance: Both sides are reading the same! (give or take), at 1.8% CO2

MOT? bring it on. :yes: