AFR reading with exhaust leak
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Joined: Jul 2014
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From: Boston, MA
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.
New Member
Joined: Jan 2017
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From: Pennsylvania
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..
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Joined: Mar 2017
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From: Swamp
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.
Thread Starter
Registered User
Joined: Jul 2014
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From: Boston, MA
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.
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.