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AFR
Hey guys, I scraped my downpipe the other day and now my Tanabe VLS gauge is reading 0.01 - 0.02 too rich.
It was a stable 14.7 idle and 20.0 decel for the last year and minutes before scraping
Now it's reading a stable 14.6 and a 19.8
Any idea what might be causing a slightly rich reading?
I looked underneath and it seems fine and I also reset the battery which didn't help
The sensor is mounted on the top side of the downpipe so it couldn't of possibly hit the ground
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