Hey ya i started this topic and have been battlein it since the kicker was bought. Im only 19 but know alot about it. But i did the same thing most of you guys did, rammed a hanger or wire up my ports and tubes tryin to clean it. for some this worked for others, i did not. i found a man at a swap meet bought a used lower intake manifold, then had it hot tanked, ported, and a little trick but thats besides the point. When i took my lower manifold off it was full of carbon, i kept cleaning and re cleaning my newly hot tanked manifold, but air would still not pass thorugh. the port leading to the exhasut blew like a champ, lots of break cleaner and Q tips broke it all out. But from the EGR to the intake it was still blocked. I took a coat hanger broke it appart, then located 4 tiny holes inside the intake leading from the EGR main pipe. I dug at these for about 10 mins a hole and all were unclogged.i re-instaled the intake and have had not codes or problems for 5000 miles.( knock on wood) Stop runnin cheap gas!! this is where most carbon and build up comes from i run cheveron, and a fuel system cleaner every three tanks. My miles per gallon are sittin steady at 25-27 everywhere. i do have cold air intake, header, high flow cat, 2.5 exhaust, and spark plug wires/plugs so i dont know if that helps as well. but any other questions just ask