Sure did. Your future is giving up power and drivability until you fix it.
Reading plugs isn't that hard. You should learn to do it. While it was all the rage in the late 90's and all through the 2000's tell people who knew how to read plugs how stupid we were because we didn't use O2 sensors and all that bullshit (which we had on they dyno BTW so I used them) and in the last few days I've seen no less than 3 articles on how important reading spark plugs is.
O2's can fib. I trust a plug reading long before anything that comes off a computer.
So yes, you timing is slow and you are rich at idle and cruise. And that's without knowing the brand of plug. At least it isn't a black shelled plug.
