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I have about 1000 miles on my rebuild. Car is purring like a kitten. But I have some sort of issue when I try to go wot and the same issue when when I get to about 11-12 psi and try to go passed that. The seems to be misfiring. My question is, if I added a CAI and headers with cats, will this caused the car to lose psi. I think i read that when headers are added you tend to lose a couple psi. Second question is do I need to get the car retuned after adding those two mods or could this be a not enough fuel issue? Thanks in advance