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5 years ago ago l bought a 97 se-r. The kid l bought it from swapped a jdm sr20de with roller rocker cams but used the usdm intake. The exhaust manifold is from the jdm motor and the egr tube is not there. Now comes the part of pissing people off. For about 3 months I've been searching for this answer across here g20 net and other forums. Just recently the egr 0400 code popped up and i cannot figure it out. He had a screw blocking off one tube that fell out and that caused the code but replacing it didn't fix. He said he did the Delete correctly but reading all those post have done nothing but confuse me even more. Could a cracked or leaking line still throw a code with it deleted i know this is vague right now but I'll update tomorrow on my exact set up and i really would appreciate any feedback.i have md emmisions coming up and l need my codes gone and light off. To pass