Ok guys, after nearly a year of the Jeep sitting the garage, I have decided to get it up and running. The Howell kit is about 95% done but I have a couple of questions...1. for the check engine light, which lead is pos and which is neg? They are not the standard white & black or red & black that you would expect. 2. Anyone had any problems on their install that I should know about? 3. The guy at Howell told me it would run without a cat but would run better with one. How can that be if the O2 sensor is in the exhaust manifold?

I'm hitting this hard Saturday morning so any responses would be greatly appreciated. Thanks in advance.