Emissions test failed
#16
Nordschleife Master
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Why just vent it to the atmo for a short period, why not convert to a air oil seperator instead? And vent that to atmo, it is alot neater and you wont get oil all over everything. would be a good idea to adjust the CO mix at idle with O2 sensor disconnected.
#17
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What O2 sensor - Non cat euro cars don't have one LOL another reason for installing cats. I may well consider converting to oil separator or GTS style venting at somestage. Just want to get it on the road first.
#18
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Join Date: Nov 2006
Location: Marietta, GA
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Originally Posted by byrdman454
I guess if you have to do a dyno rolling test, a catless 928 will not pass. My car seems to be in a good state of tune with a MAF and LH less than 6 months old. Thank goodness this is over. No more emissions testing for 96-older cars starting next year!
#19
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Success
My 88 SE passed it's IM240 test today. I cheated. I had set the base emissions without cat or airpump back to 1% CO standad for a None CAT None O2 sensor car, and was going to go with that. However the two month wait for a test forced me into fitting a Cat with no O2 sensor (temporarily) to get the SE through the test. I increased the base mixture to about 1.1%CO to give the CAT something to work with. The cat will come off and back on goes the original front muffler before the car goes to the Compliance Engineer.
Results were - with Mikes results posted for future ref.
pass meas
g/km g/km
0.50 1.64 HC US Mike
0.93 2.77 HC AUS Jon Test 1 fail
0.93 01.2 HC AUS Jon Test 2 PASS
9.32 8.93 CO US Mike
9.30 43.40 CO AUS Jon Test 1 fail
9.30 4.7 CO AUS Jon Test 2 PASS
1.24 3.12 Nox US Mike
1.93 1.38 NOx Aus Jon Test 1 pass
1.93 0.23 NOx Aus Jon Test 2 PASS
My 88 SE passed it's IM240 test today. I cheated. I had set the base emissions without cat or airpump back to 1% CO standad for a None CAT None O2 sensor car, and was going to go with that. However the two month wait for a test forced me into fitting a Cat with no O2 sensor (temporarily) to get the SE through the test. I increased the base mixture to about 1.1%CO to give the CAT something to work with. The cat will come off and back on goes the original front muffler before the car goes to the Compliance Engineer.
Results were - with Mikes results posted for future ref.
pass meas
g/km g/km
0.50 1.64 HC US Mike
0.93 2.77 HC AUS Jon Test 1 fail
0.93 01.2 HC AUS Jon Test 2 PASS
9.32 8.93 CO US Mike
9.30 43.40 CO AUS Jon Test 1 fail
9.30 4.7 CO AUS Jon Test 2 PASS
1.24 3.12 Nox US Mike
1.93 1.38 NOx Aus Jon Test 1 pass
1.93 0.23 NOx Aus Jon Test 2 PASS
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