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Message: <blockquote data-quote="ErikV" data-source="post: 1423029" data-attributes="member: 342326"><p>I have a honda civic vx (economy vtec) with an EGR syster (exhaust gas recirculator) for better smog and gas mileage...low HP so i swaped it out for a JDM D15B but there was a problem...the intake manifold for my new engine doesnt have an EGR Box... so i have an extra sensor for the EGR Box and a vaccume line hanging there so when i start my new engine it fluctuates idle and my check engine light comes on..so i put back on my old intake manifold...(bad because i have low horsepower because my throttle body and intake manifold is so small but the new 1 i cant put on is HUGE which means more horse power but i cant use it because of the extra EGR sensor and Vaccum line...how can i fix this...?</p></blockquote><p></p>