I am not going to wade into the "debate" here, but I will mention just for clarification that I do indeed have catalytic converters on my car. They were installed with Houston's "Performance Exhaust" (actually, at DMC Florida) by a previous owner. As a result, they're less than 10 years old. My car did run with a vacuum leak while using K-Jet, and also for a while using the carburetor, but they were both small-enough vacuum leaks to not affect my fuel economy significantly. My exhaust smells fine and the catalytic converters have never overheated, so it can be assumed that they are healthy. However, the only way to know for certain would be to get two exhaust gas analyzers: one which attaches to the oxygen sensor, and another which attaches to the tailpipe. I do not have these tools on hand, so I do not have numbers to look at. In my opinion, since there are no data there is no real argument to be made. Let's all just get on with life and enjoy our cars. Farrar Hudkins #2613 [Non-text portions of this message have been removed] ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: dmcnews-digest@xxxxxxxxxxxxxxx dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/