Way too lean for a dyno. You should tune for 11... 11.5 max if you have supporting mods.What timing are you running? Your graph and numbers seem about on par for 16psi of pump fuel with Sport 500s. Notice how fast and smooth power comes on? ... that's good. But it looks like too much timing, and too little fuel (for when the turbo kicks out excessive heat at 5k+) caused you to go drop off on top.
Petz #3
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