I have a 00' Civic Sedan VP D16y7 with typical mods intake, headers, and with a 2.5 exhaust pipin with a Tenzo type 2 Muffler. Well anyways every time i full throttle it, it's like all fast when shiftin gears 1-3 but like when it hits 4th gear ( oh yeah it's a automatic ) it's all like laggy or slow like lost of hp for some odd reason. Is it because the auto trans or somthin??? and i was thinkin if i get AEM 's cam gear or any cam gear and power pulley's well help my 4th gear be no more laggy or gotta fix the tranny?? any help would be appreciated