First MOT due next month, failed before even started!!
Discussion
First MOT is due next month so decided to take it into work on Saturday to put it on the emissions machine and see if it would pass without any problems, unfortunately it failed on that section alone so not even looked at the rest of the car yet!
Not entirely what to do about the emissions side of things, or how to get around it!!
Not entirely what to do about the emissions side of things, or how to get around it!!
.. 
after_shock said:
Ah right, well its sports cats and a higher lift cam so im bugger on all fronts and god knows what the supercharger does to emissions lol
Im sure can find a way of getting it through
with the cam you really are stuffed as the overlap will be to much even more so with the supercharger pushing the unburnt fuel through!Im sure can find a way of getting it through
neiljohnson said:
after_shock said:
Ah right, well its sports cats and a higher lift cam so im bugger on all fronts and god knows what the supercharger does to emissions lol
Im sure can find a way of getting it through
with the cam you really are stuffed as the overlap will be to much even more so with the supercharger pushing the unburnt fuel through!Im sure can find a way of getting it through
Indeed! The supercharger in itself isn't a problem but the cam most likely is.
Do you have "proper" cats and is you map running closed loop fuelling? If not then you havn't a hope!
after_shock said:
Depends what you mean by 'proper' cats? They are 100Cel items.
Have not got a clue on the closed loop fuelling must be honest!
Have not got a clue on the closed loop fuelling must be honest!
Are they platinum cats? As opposed to aussie cats which often appear to be full of steel wool!
You need to know about the fuelling too. Id suggest you need to revisit your modification choices to try and pin down the cause.
What did it actually fail on? Excessive hydrocarbons?
Edited by monkfish1 on Sunday 7th February 20:59
Yeah HC, CO and Lambda are the tests.
Like Roger says its probably HC (and or CO thats pumping out). Both are from incomplete combustion.
CO is better burnt than HC
Depending on how close you are, you can up engine temps, advance timing at very low load where the tests are and run hotter plugs etc.
But thats probably only going to help if you are close. Did you give it a thrash first to get it up to temp (and the cats)
If it was still cold, then that wont help at all.
Whats the cam spec!?
Oh also was that at normal or fast idle? If fast Idle passes, then try increasing your idle speed. Though I think 1100rpm is the max or maybe its 1200..
Like Roger says its probably HC (and or CO thats pumping out). Both are from incomplete combustion.
CO is better burnt than HC
Depending on how close you are, you can up engine temps, advance timing at very low load where the tests are and run hotter plugs etc.
But thats probably only going to help if you are close. Did you give it a thrash first to get it up to temp (and the cats)
If it was still cold, then that wont help at all.
Whats the cam spec!?
Oh also was that at normal or fast idle? If fast Idle passes, then try increasing your idle speed. Though I think 1100rpm is the max or maybe its 1200..
I remember being told after the map it was running rather rich in an attempt to keep the temps down due to the lack of an IC.
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
ringram said:
Yeah HC, CO and Lambda are the tests.
Like Roger says its probably HC (and or CO thats pumping out). Both are from incomplete combustion.
CO is better burnt than HC
Depending on how close you are, you can up engine temps, advance timing at very low load where the tests are and run hotter plugs etc.
But thats probably only going to help if you are close. Did you give it a thrash first to get it up to temp (and the cats)
If it was still cold, then that wont help at all.
Whats the cam spec!?
Oh also was that at normal or fast idle? If fast Idle passes, then try increasing your idle speed. Though I think 1100rpm is the max or maybe its 1200..
Had problems with all 3 on 007's when testing it Like Roger says its probably HC (and or CO thats pumping out). Both are from incomplete combustion.
CO is better burnt than HC
Depending on how close you are, you can up engine temps, advance timing at very low load where the tests are and run hotter plugs etc.
But thats probably only going to help if you are close. Did you give it a thrash first to get it up to temp (and the cats)
If it was still cold, then that wont help at all.
Whats the cam spec!?
Oh also was that at normal or fast idle? If fast Idle passes, then try increasing your idle speed. Though I think 1100rpm is the max or maybe its 1200..
once very hot (sounded awesome in the workshop ) the emissions on east idle got there but needed help to get threw the idle test. after_shock said:
I remember being told after the map it was running rather rich in an attempt to keep the temps down due to the lack of an IC.
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
http://www.compcams.com/Cam_Specs/CamDetails.aspx?...
You know what your reading makes no sense to me!!
That cam is tiny with negative overlap. So should fly through. As Roger says you will want to be in openloop at idle. Rich under WOT is irrelevant to the test. But based on that its likely to be your cats not working right.When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
http://www.compcams.com/Cam_Specs/CamDetails.aspx?...
You know what your reading makes no sense to me!!
Give the details of the test results and we might be able to give some more tips. You will also need to confirm that you are running a closed loop tune.
ringram said:
after_shock said:
I remember being told after the map it was running rather rich in an attempt to keep the temps down due to the lack of an IC.
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
That cam is tiny with negative overlap. So should fly through. As Roger says you will want to be in openloop at idle. Rich under WOT is irrelevant to the test. But based on that its likely to be your cats not working right.
Give the details of the test results and we might be able to give some more tips. You will also need to confirm that you are running a closed loop tune.
You really meant closed loop didn't you?
monkfish1 said:
ringram said:
after_shock said:
I remember being told after the map it was running rather rich in an attempt to keep the temps down due to the lack of an IC.
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
http://www.compcams.com/Cam_Specs/CamDetails.aspx?...
You know what your reading makes no sense to me!!
That cam is tiny with negative overlap. So should fly through. As Roger says you will want to be in openloop at idle. Rich under WOT is irrelevant to the test. But based on that its likely to be your cats not working right.When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
http://www.compcams.com/Cam_Specs/CamDetails.aspx?...
You know what your reading makes no sense to me!!
Give the details of the test results and we might be able to give some more tips. You will also need to confirm that you are running a closed loop tune.
stevieturbo said:
monkfish1 said:
ringram said:
after_shock said:
I remember being told after the map it was running rather rich in an attempt to keep the temps down due to the lack of an IC.
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
When the test was done the car had been sat for a few hours so wasnt particularly warm, depends how close it was I suppose as if warming it up or not would make that little bit extra difference.
Spec on the cam is below:
www.compcams.com/Cam_Specs/CamDetails.aspx?csid=1089&sb=2
You know what your reading makes no sense to me!!
That cam is tiny with negative overlap. So should fly through. As Roger says you will want to be in openloop at idle. Rich under WOT is irrelevant to the test. But based on that its likely to be your cats not working right.
Give the details of the test results and we might be able to give some more tips. You will also need to confirm that you are running a closed loop tune.
You really meant closed loop didn't you?
His mind is too busy thinking about supercharger upgrades :P
after_shock said:
First MOT is due next month so decided to take it into work on Saturday to put it on the emissions machine and see if it would pass without any problems, unfortunately it failed on that section alone so not even looked at the rest of the car yet!
Not entirely what to do about the emissions side of things, or how to get around it!!
Not entirely what to do about the emissions side of things, or how to get around it!!
Mine falled on the emissions but when i get the box of Stella out of the boot it came up PASS lol
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