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P0327 = knock sensor so nobody has to go look it up. I heard there was a problem on the 03's way back when and they were replaced under warranty, unsure on TSB. That's all I know.
Best bet is ask your tuner since he is more familiar with your setup.
this ^^^. I dont know from experience, but from what i have read Hal is without a doubt the best when it comes to the vq35. Call dynosty and ask some questions, I havent heard one bad thing about them yet
