I have a 98 Integra that gets too much fuel on the highway only. Its fine around town. As soon as i get on the highway i notice a difference. It begins to sputter. When i get off the highway it wants to stall. Any ideas what that is and what to do to fix it?

 

check your spark plugs

 

Your pressure regulator may have gone bad? Are you using the stock injectors/fuel rail? Only thing I could think of is maybe if you were using injectors From an older Car like a da, they may not be pulsating injectors and you may be missing the box that would make them work. Just my two cents hope it helps✌️