would 02 sensor not working cause the engin not to rev up and tick over up and down. just drove car home from putting vf35 turbo on and sport de cat and i know i need a re map but didnt think things would go wrong so quick. wanted to just put de cat on but had to change turbo because td04 broke.but had no gaskets so have to do it all again befor re map as blowing a small amount on up pipe

 

My O2 sensor is knacked and it doesnt do this.