Well my car is still having some issues.

When the car is cold it runs just fine with no problems. When the car wamrs up its starts to run sluggish and makes a poping sounds from the exhasut like a misfire. I've changed the cap, rotor, sparkplugs and wires. I checked the timing and its fine. What could it be?

 

What car? How many miles? What kind of mods?

 

96 civic hatch, B18c1 Skunk2 IM, JDm itr header, password intake, tanabe exhaust.