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Message: <blockquote data-quote="94califiveoh" data-source="post: 700114" data-attributes="member: 12601">people will tell you that they delete the EGR for performance, but the EGR doesnt work when you are at WOT. the purpose of the EGR is to recirculate exhaust gases back into the intake. there are a few reasons for this, main one being that because the exhaust gases are no longer combustable, it cant ignite and therefore doesnt let the cylinder temp get too hot. the other purpose of the EGR is to reduce emissions, which is why you cant legally remove it in an emissions oriented state. people believe that if they remove the EGR, it will no longer allow the exhaust gases into the engine, which means it will be using nothing but clean air and fuel, which is 100% true. BUT, here's the kicker: like i said earlier, the EGR does not operate when you are at WOT, and remains closed, which is the exact same as removing it. so for all those who want that extra performance, unless you really want max performance when you arent even going full throttle (???), it does you no good except to run your cylinder temps higher during daily driving. *this was quoted from another thread</blockquote>