AFR reading with exhaust leak
07-23-2017, 10:57 PM
#1
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AFR reading with exhaust leak
recently switched my ISR TEST PIPES (crap) and megan Y pipe for berks test pipe and tomei y pipe.
Kept expierence leaks between the test pipes and headers (before o2 bungs on test pipe).
Could the leaks AFR readings during WOT? My target AFR I 12.66. But I'm reading 13-13.5.
Kept expierence leaks between the test pipes and headers (before o2 bungs on test pipe).
Could the leaks AFR readings during WOT? My target AFR I 12.66. But I'm reading 13-13.5.
07-24-2017, 05:41 AM
#2
recently switched my ISR TEST PIPES (crap) and megan Y pipe for berks test pipe and tomei y pipe.
Kept expierence leaks between the test pipes and headers (before o2 bungs on test pipe).
Could the leaks AFR readings during WOT? My target AFR I 12.66. But I'm reading 13-13.5.
Kept expierence leaks between the test pipes and headers (before o2 bungs on test pipe).
Could the leaks AFR readings during WOT? My target AFR I 12.66. But I'm reading 13-13.5.
??... You need to re-type this more clearly. I think I know what you're asking, but I'm not gonna assume..
07-24-2017, 07:56 AM
#3
Leaks pre-o2 sensor will distort readings.
from what I recall when mine leaked it must have sort of scavenged clean air through the leak point in the gasket and pulled it into the exhaust stream as it was reading a bit leaner than normal, similar to what you described.
from what I recall when mine leaked it must have sort of scavenged clean air through the leak point in the gasket and pulled it into the exhaust stream as it was reading a bit leaner than normal, similar to what you described.
08-05-2017, 10:32 PM
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Holy crap I must of been high when I typed this haha
i have some leak noise under my car with the new tomei Y pipe. Checking under the car and ran multiple test and we can't find any air leaks what so ever. The tomei Y pipe rattles near the collector between 2300-2500 every time with some throttle.
My main question was. Could a exhaust leak after test pipes throw off AFR readings still.
i have some leak noise under my car with the new tomei Y pipe. Checking under the car and ran multiple test and we can't find any air leaks what so ever. The tomei Y pipe rattles near the collector between 2300-2500 every time with some throttle.
My main question was. Could a exhaust leak after test pipes throw off AFR readings still.
08-07-2017, 11:13 AM
#6
Holy crap I must of been high when I typed this haha
i have some leak noise under my car with the new tomei Y pipe. Checking under the car and ran multiple test and we can't find any air leaks what so ever. The tomei Y pipe rattles near the collector between 2300-2500 every time with some throttle.
My main question was. Could a exhaust leak after test pipes throw off AFR readings still.
i have some leak noise under my car with the new tomei Y pipe. Checking under the car and ran multiple test and we can't find any air leaks what so ever. The tomei Y pipe rattles near the collector between 2300-2500 every time with some throttle.
My main question was. Could a exhaust leak after test pipes throw off AFR readings still.