i have a b16a EK and around 6000-7500rpm...it starts to jerk..mostly on 4th gear....what could be the problem?....I wish I had a Kseries motor cuz Kseries motors own me.....

My motor is basically stock with a comptech filter, ES oval, and Spoon test pipe......

Any info would be greatly appreciated.....

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NHBP RSX's are the ****!!!!! They own me!