Hi guys. So my 1996 honda civic b20vtec with b16 trans started making this very harmonic wub wub noise only in gear at 2500 to 2700 rpm. It almost feels like the exhaust is pulsing throughout the whole vehicle. At first i suspected a wheel bearing but when i checked on a lift there was no play in the bearings and it happens only at the rpm in every gear no matter the speed. So im thinking maybe inside the trans. Installed a competetion clutch with new throwout bearing and input shaft a month and half ago, along with a new flywheel 12 pounder.Any idea thank you