Hi Iown a 91 honda civic stock motor hatch.. intake full exhuast gutted cat... Iam wondering why my car feels like it has more peppp when its like 30 percent warmed up then when it gets fully in the middle warmed up it feels way slower it sucks lol anything?????...

 

my crx does that same thing it runs like **** wen it is warmed up i fixed it by puttin a high flow car instead of a gutted cuz w/ the gutted u have no back pressure on ur engine and ur engine is designed to have at least a little back pressure. try that or go 2 a junk yard and get a stock cat and put it on and see wut happens that should be ur problem.

 

So whats the point of a gutted cat???