Sluggish takeoff

why did you replace it? Is the replacement a factory Denso/Toyota?

 

I replaced it because it was crusty. My brother-in-law had it before me and didn’t maintain it. He just thrashed it and thought it would be good.
So I went in and just replaced everything that should be replaced every tune-up

 

Update:
So I went through all of my records and found that I never bought plugs(for some reason). As of now they have been replaced and it seems to be running fine for now. The old plugs looked fairly decent other than normal wear.
I pulled some pretty big hills during the hot weather and no pinging so all is good.
Time just flew by and didn’t realize I have had it for three years.
So six (probably more) years on these plugs isn’t terrible.

thanks for helping me brainstorm… I have had a lot going on lately and haven’t really had time to sit down and problem solve.

 

check for exhaust leaks at the manifolds by the cats, once the gaskets were replaced i got 420 mile a tank again and no more stalling at take off

thinking it was running rich with extra o2 at the sensors