I just removed my cat and now i have some white smoke at idle, it goes away if i increase rpms to 1000, is this just because the motor used the extra back pressure and heat to burn up all the exhaust? Should I be worried about anything? Thanks Joel

 

Are you talking about just after a cold start or all the time at idle. Do you get this when fully warmed up?

 

Oldsmokey I get that same thing when it's cold out, but only for a minute, and it goes away when I increase the idle just like you described. And I still have my cat...though not for long