I have a 2004 honda civic and am having some back fireing issues. I have a aem short ram intake and a greddy evo2 catback. Has anyone had this problem with the mods that i have on a 2004.

 

Do you have a CEL? (Check engine light)

 

yes but it has not come on at all.

 

Check your spark plugs they might be fouled out. how long has it been since it has been given tune-up. that could be your problem.

 

i dont know the last time it has been tuned up i bought it about 6 months ago off a dealership. i was wondering could it have anything to do with the air filter being dirty cause my engine bay seems to get alot of mud and water splashed inside. That was another thing i was wondering anyone know where to get fender liners for the 2004. I looked around on the net but all i can seem to find is for 2003 no further up.