Pulled spark plugs - Lean?

[TruongVu]

Just bought a fbo 2020 GR Supra tuned on e50/flex fuel with 47k miles. Pulled the spark plugs and wanted to know what you guys think of it before I go and get some software to check my AFR, etc.

Side note. I don't have access to the tune files from the original owner.

Please excuse my ignorance.

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[KBGT]

Kind of hard to read the plugs from the pictures provided. Overall they look fine, nothing crazy like a aluminum speckles on the ceramic or melted straps.

 

[razorlab]

What makes you think those show lean conditions?

 

[TruongVu]

What makes you think those show lean conditions?

The plugs themselves showed a little more white/light gray than what i'm used to. I'm more used to a tan/brown. Car runs fine though. Maybe i'm just overthinking things.

 

[razorlab]

The plugs themselves showed a little more white/light gray than what i'm used to. I'm more used to a tan/brown. Car runs fine though. Maybe i'm just overthinking things.

With that mileage, they look normal. It's hard to read plugs over the internet of course but lean would be pretty white porcelain and the heat line on the strap would be off the middle, but with all that mileage on those plugs, that would be hard to read.

 

[TruongVu]

With that mileage, they look normal. It's hard to read plugs over the internet of course but lean would be pretty white porcelain and the heat line on the strap would be off the middle, but with all that mileage on those plugs, that would be hard to read.

Sounds good, really puts my mind at ease. I'll check them again in like 10k miles.
Thanks everyone for the replies.

 

[Rocksandblues]

I'd be careful running an unknown tune.

 

[ope_sry]

Agree with earlier comments, from what it looks like the insulator around the electrode is a good tan/brown color, nothing alarming based on internet picture evidence

 

[FuzzyRev]

I can read plugs, and those look great. I literally said those words out loud as soon as I zoomed in on the picture.

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