[QUOTE][i] second, which may be faster is to remove the power boster line and let it run lean for about 20 minuites. this shoud have the rpm about 2 thousand.
/[QUOTE]

Ridiculous!!! A vacuum leak will not alter the fuel-air ratio. Feedback from the O2 sensor will add fuel to maintain a stoichiometric ratio (14.7:1)unless the vacuum leak is so large that the system cannot correct.

Normal closed loop operation maintains stoichiometry under all but WOT conditions.

I know of no way to "clean" a catalytic converter, nor is it necessary. If the KE system is in proper working order and oil consumption is not excessive the converter never needs to be "cleaned". Very high oil consumption of an overly rich or overly lean mixture over extended mileage can mechanically or chemically damage the converter, and at that point, the only fix is to replace it.

Duke