dude... you ARE stock
the rev limiter is a protection device for not-so-smart people so they dont over rev their engine...
all you did by chipping the ecu is remove the protection... your motor still cannot handle anywhere near 9,000rpm
you need to upgrade the valve train to handle 9,000rpm....
i would do some more research before you continue modding your car........... and DONT rev it to 9,000rpm again