92 civic 1.5 ltr D15b7 need some advise on it runs and drives awsome only the is it lops like a damn harley once it has hit its normal temp starts easy .has the power changed fuel filter,plug and plug whires and cap,brakes valve cover gasket cv joints oiland oil filter cv valve .all is new took off and cleaned iacv , and throttle body apart and cleaned good back on yet still does it think possibly lecky valve can it cause such lopes it pushes out from tail pip but in the lope it sucks in from tail pip help