well i can tell you that if your going to be replacing the EGR i would clean the EGR passage in the intake manifold as well, i can tell you from being a Toyota Tech that the EGR pipe and EGR passage get clogged and cause random or multiple miss fires all the time. the KA im rebuilding (till i can afford and SR) only has 130k on it and the EGR passage and pipe was all plugged up, just take some brake clean, a pipe cleaner (metal one) and a flat head screw driver to clean out the carbon and exhaust build up and then your check engine light wont play peek a boo with ya. you can do all that if you want if your going to be using that engine for a while, but if your gonna do a swap soon i wouldn't worry about it.
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