Though it doesnt happen often, BUT you might want to check the TB to make sure the butterfly actually opens all the way when the pedal is pushed down... you just need to pull the intake pipe off and get someone to push the pedal down while the ignition is on...
I could see bad gas causing power issues, but not rev limiting issues... but hey stranger things have happened so i try not to rule out anything anymore.
Best of luck and keep us posted
H
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Previously owned:
2000 Boxster S 3.2 Ocean Blue / 1974 911 Targa Silver
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