My 98' Ex just intake,muffler, and header has a problem idleing it will die unless you keep it running when its cold (below 35Deg). But usually i can start it if its above 40Deg. and it will idle but then when i leave and pull up to a stop light it will fall falt on its face and die and is hard to restart the best way to restart it is to push the gas peddal to the ground and start it this is all unless i let it worm up for 10 min before going anywhere. I also have a phoblem of like a miss at high RPM's and when it starts to miss you have to drive it around a while and it will eventually go away. Any help guys. Thanks

 

check engine light or codes???
maybe O2 sensor, coolant sensor, intake temp. sensor, or TPS???
not sure???
check for codes and let me know???