Do you know the difference between the LC-1 and MTX-L ? Is the only difference the integrated controller?

It may also help me figure out why my 300TE's idle has never been 100% smooth like my 260E's is...that would be bomb!!

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k