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Message: <blockquote data-quote="97stanger" data-source="post: 976751" data-attributes="member: 8229">Hey guys,  Looking for some input/ideas.  I brought the car home today because I have my meth tune setup for next weekend.  Bought new TR6's that I was going to put fresh ones in before the tune.  Well, we pull all the plugs out and everything is burning perfectly.  We gap the new ones just as the old ones were, put the new ones in and fire the car up.  The car is surging badly at idle pretty much at 700 rpms - 1500 rpms.  We turned the car right off, and pulled the plugs.  They were pitch black, rich.  We put the original plugs back in the car (which I just drove the car home 25 minutes) and fired it up.  Same thing, fouled these plugs out too all black.  We checked all our vacuum lines, hoses, etc and everything is connected.  We are pretty stumped as to what could be causing this issue right before my meth tune is coming up.  Anybody have any ideas?</blockquote>