i used to carry out to around 6500 and it didnt feel like it did anything after 6000 so i just didnt bother going that far. i saw this crx and come on.......... you had an extra head sitting in the back of the car. the oil pressure was messed up or some crap........ 9K????? i had a b17a1 gsr motor and i dont think mine went quite that high... i slammed it out miss shifting once and it went to about 8k or something