So have to change that summary after looking close at my records.
The 800 mile (first analysis) was the third change on the new engine. Not good looking, huh?? I did not like it.
1st was at 484 miles early in its life. Good break-in.
2nd after 3400 miles total (2900 miles) on the street the balance of 2021. Enjoyed it.
3rd after another 800 miles (first analysis) last June after easy spring running and then RA. -another failed cat, and hit limp mode when it sensed the failure. So I wanted to see what this engine looked like after blowing several cats, running out of gas once on the track and probably doing some lean running, unknown to me, but holding itself together.
Then! I filled it with the Mobil that I got tired of looking at on my shelf and went to BIR on the hot day in July (no tune yet and with the new cats). Did not allow it to stay at 290, let it cool to 250-270, then ripped on it again. Did that for 2-3 sessions that day before driving it home and calling Jon and ripping the cats out!
Then
@Jon-MooredPerformanceLLC fixed it, did the Ozark’s track (first track tests- it ran like a beast and actually scared me) and that glorious cool test day in October at BIR where it waxed everything that showed up on the big straight, hitting 170 mph max several times. That is when we loaded in a bit more aggressive top end after we got comfy. We just may just add a bit more and some extra go juice for RA this spring. I need to see if it can get enough traction to justify it.
So the current results did not contain any real extended hot operating time. But did contain some real good running on a tune in it finally. You guys should be able to bust on these engines large for ten seconds at a time! Enjoy.